Input 120V AC 60Hz 0.2A Output 18V AC 500mA, 18V 500mA Doorbell Transformer of the cable is 5m. 18V doorbell charger passed FCC, CE,ROHS,Certified. 18v 500mA power adapter have overcurrentovervoltage overload overheat and surge protector. SIMPLE SETUP - 18v 500mA battery charger adapter for all versions for your for Ring doorbell, for Ring Video Doorbell 2 and for Ring Video Doorbell Pro.18V Doorbell Power adapter Easy installationNote Please connect the doorbell before connecting 18V 500mA Power Supply Adapter, and be careful not to let the two 18V 500mA Charging Cable connected together cause short circuit. CONTINUOUS CHARGING - 18V 500mA UL Certified Video Doorbell Power can now let your video doorbell operate continuously without the need to remove it to change its battery. Our 18V doorbell wired charger allows you to keep your for Ring Doorbell always juiced up. No more downtime and interruptions due to empty batteries. Compatibility Doorbell transformer 18V 500mA for Ring Video Doorbell, for Ring Doorbell, for Ring Video Doorbell Pro, for Ring Video Doorbell 2, for Nest Hello Doorbell, for Nest Hello Video Doorbell, for Zmodo Smart Doorbell, for Nest Doorbell, for SimpliSafe Video Doorbell, for Eufy Video Doorbell, for Arlo Video Doorbell, for Google Nest Hello Doorbell, for Wyze Doorbell, for Zmodo smart Doorbell and other doorbell devices that require an 18V transformerc. After-sales guaranteeWithin 30 days of purchase, we offer a no-questions-asked replacement or full refund guarantee, If you have any questions about the 18 volt 500 ma AC current or something is unclear, please contact us via QA or email in time.

24 Volt Power SupplyInput 100V-240VAC 60Hz 0.8A Max., Output DC 24V 1000mA, Power cord length19.6ft 6m. Wire Black , White -. compatibility whit 24V900mA, 24V800mA,24V600mA,24V500mA, 24V300mA,24V100mA. Widely ApplicationsThis C wire adapter is compatible with most smart thermostats, including Nest, ecobee, Honeywell, Lowe's Iris, Tado, Sensi, and more. It is the perfect solution for connecting your smart thermostat to the C wire terminal in your heating and cooling system.and other devices that require constant 24 volt power for operation.. Easy to InstallWith 2 pin non-polarity, you can connect doorbell and temperature regulator assembly without the existing doorbell or wiring, and connect LED strip lights without soldering with type CH-2 terminal.. Use with confidence Our power adapter for doorbells keeps your device constantly powered , and continuously operate without interruption. The power adapter have overheat protection, over-current protection, overload protection, over-voltage protection. Its compatibility with LED strip lights, Ring doorbells, and thermostats adds to its usefulness in various applications. The 24V 1A output provides sufficient power for these devices, ensuring their optimal performance. The compact design and ease of installation make it a convenient choice for DIY projects.. You Will Get1x 24v Power supply with long output line.Before purchasing, please confirm that the voltage and current required by the doorbell or thermostat match the power supply. If you have problems after purchase, please keep in touch with us and we will reply you immediately..

HQRP Replacement Transformer POWER UP MULTIPLE THERMOSTATS DOORBELLS replaces and upgrades underpowered transformer with this 24V AC transformer, offering plenty of power for single or multiple thermostats and doorbells at the same time. Input 120V-240V AC Output 24V AC 40VA UNIVERSAL COMPATIBILITY this 24v transformer fits for Nest, Ecobee, Honeywell and Sensi smart thermostats Also compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell Doorbell, and other devices that require constant 24 volt power for operation. CURUS Listed Safety Features High Efficiency and Reliability. EASY TO INSTALL screw down or threaded clamp to electrical box, simple to wire up Compatible With 24V 40VA Transformer compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v Replacement.

Doorbell transformer compatible with smart thermostats and doorbells, such as Nest, Ecobee, Honeywell, Sensi thermostats, and Video Doorbell, Video Doorbell 2, Video Doorbell Pro and Nest Skybell doorbells, Compatible with Ring video doorbell 2020 release,Video Doorbell 34Plus, and Video Doorbell ProPro2 .. 24 Volt Doorbell transformer is made of high quality material, anti-thermal, provide stable current output connected to device, prevent overvoltage, overcurrent, overheat and short circuit. C Wire adapter is 26 feet, long enough to plug it into an electrical outlet inside or outside your house, and charge your smart thermostats and doorbells continuously, solve all battery issues and with no more interrupt or any safety concerns. Specifications of doorbell transformer is Input AC 120V, 60Hz 0.2A, and the output 24V 500mA. Easy to install transformer in minutes with 2 pin non-polarity wires, along the wall from your outlet to the doorbell and thermostat without the existing doorbell or wiring.

Wide Compatiblity - 24v universal US power cable powers popular smart doorbells. Compatible with Ring video doorbell 2020 release, 34plus, and pro 12, Nest, Eufy, Skybell, Arlo, etc. Continuously converts 110120v to 24volt 500ma.. Safe and Convenient - Low battery issues is solved. The adapter is a quick and convenient way to charge your smart doorbells continuously. Now get rid of all battery issues and with no more interrupt or any safety concerns.. Certificated Safety Adapter - A certificated battery backup is stable and sturdy for years use. A waterproofed 16.4ft cable is long enough for you to put the doorbell any where higher or lower on your wall.. Easy to Install and Maintain - Assemble along the wall from your indoor outlet to the doorbell. The non-polarity wire is much easier for quick installation.. Guaranteed Quality - Package includes 1 transformer adapter with 10 cable clips. 30-day money back. 247 professional service team. Contact if you have any questions..

ring plug in adapter Our team has made a new upgrade design, which completely solves the problem of noise during use, and the 18V stable output makes your visual doorbell work perfectly and normally. Wide range of applications compatible with Ring, Nest, Arlo, Eufy, Wyze and other large number of video doorbell equipment. Long cable design We use an 8M extension cable so you can easily plug the ring doorbell adapter into a power outlet inside or outside the house. High quality material ring doorbell power supply housing is made of PC fireproof material, US pure copper plug has a longer service life. XZGM is a professional power transformer design and production team, has been improving the use of consumer troubles, if you encounter any problems in the use of the process can always contact us, our team will provide you with a solution to your satisfaction, wish you a happy life.

US power cable Powers your popular smart thermostatsNest, Ecobee, Sensi and doorbellsRing Video Doorbell, Ring Video Doorbell 2 Ring Video Doorbell Pro,Nest Skybell , etc. and other devices that require constant 24 volt power for operation.. Assemble along the wall from your outlet to the doorbell and thermostat without the existing doorbell or wiring. Easy installation and be able to set up in minutes.. Our cable is 5M196 inch long and you do not worry about the distance between the socket and the Smart Wifi Thermostat. This allows you to easily plug it into an electrical outlet inside or outside your house.. Our transformer has obtained relevant safety certification and test reportA quick fix to the problem of Low batter you can charge it directlyplug adapter into outlet and power up. that means you don't need to remove your thermostat in order to charge up the battery.With an AC output of 24V500mA, a perfect tool to meet your needs.. 30-day money back, Professional customer service. we has a professional team which has been specialized in designing and manufacturing Power transformer for a few years, improving technologies to meet consumers' needs..

20V C wire power adapterplugs into your standard 110 v120 v outlet and converts to 20 volt 500 ma AC current. Doorbell transformer power supplyquality designed to compatible with eufy video doorbell, just charge directly, no need to remove and charge up the battery, convenient and practical to solve the problem of low battery. UL certifiedUL certification passed, stable and durable operation 20V transformer. Easy to install2 pin non-polarity wires support easy and quick installation, 16.4 ft cable is long enough to plug it into an electrical outlet inside or outside your house. Packing list1 x doorbell power supply, 1 bag 50 pieces of black cable clips The brand mentioned above is just for demonstrating compatibility.

Application Suitable for smart thermostats Nest, Ecobee, Honeywell, Sensi, Emerson, Hive, etc and doorbells Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell, Zmodo WiFi smart doorbell, Nest Hello doorbell, etc. and other devices that require 24 volt power With constant power and constant operation. Product Parameters Input AC 120V, 60Hz 0.2A, output 24V 500mA. Cable length is 315 inches 8 meters.. Easy To Install 2 pin non-polarity wires support easy and quick install, Assemble along the wall from your outlet to the doorbell and thermostat, 26 ft cable is long enough to plug it into an electrical outlet inside or outside your house.. Security Special design and materials ensure that provide the best current output connected to your device. Prevent short circuit, overvoltage, overcurrent, overheat, ensure charging safety.. Please note Please check whether your device is the model in the details before purchasing. If you have problems after purchase, please keep in touch with us and we will reply you immediately..

1. Compatibility Professional USB charging cable compatible with video doorbell 2020 version 233 Plus4, doorbell ProPlus. Note Please confirm the charging port before purchasing.. 2. Fast charging High-precision pure copper wire ensures safe and fast charging, with a maximum of 2.4A and a data synchronization speed of up to 480Mbs. Protect your device and charging adapter from damage. 3. Fast charging Supports up to 2.4 amps of current. It is made of 23 AWG high-specification and low-impedance wires, and the charging speed of the charging cable is faster than that of ordinary USB data cables.. 4. High quality assurance compact and portable design, convenient for travelers and most people to carry anytime, anywhere.It has passed 1000bending tests, adopts thickened PVC material, has a long service life, and the cable has tensile resistance and safety.. 5. Focus on better products and provide customers with the best experience. If you have any questions, please feel free to contact us. Our service team will reply to you with a satisfactory solution..

WIDELY USE US power cable Powers your popular smart thermostatsNest 1st2nd, Ecobee, Honeywell, Sensi and doorbellsRing Video Doorbell, Ring Video Doorbell 2 Ring Video Doorbell Pro,Nest Skybell , etc. and other devices that require constant AC 24 volt power for operation, enables you to charge your devices safely.. EASY TO USEAssemble along the wall from your outlet to the doorbell and thermostat without the existing doorbell or wiring. Easy installation and be able to set up in minutes.. LONG CABLEOur cable is 8M315 inch long and you do not worry about the distance between the socket and the Honeywell Smart Wifi Thermostat. This allows you to easily plug it into an electrical outlet inside or outside your house.. SAFE AND CONVENIENT Our battery backup has gotten certificate. A quick fix to the problem of Low batter you can charge it directlyplug adapter into outlet and power up. that means you don't need to remove your honeywell thermostat in order to charge up the battery.With an AC output of 24V500mA, a perfect tool to meet your needs.. WHAT YOU GET- 1. High quality accessory 2. 180 Days money-back 3 . Professional customer service. VIIVRIA has a professional team which has been specialized in designing and manufacturing transformers for years, improving technologies to meet consumers' needs..

20V C wire power adapter plugs into your standard 110 v 120 v outlet and converts to 20 volt 500 ma AC current. Doorbell transformer power supply quality designed to compatible with wireless doorbell wireless chime arlo video doorbell, just charge directly, no need to remove and charge up the battery, convenient and practical to solve the problem of low battery. UL certified UL certification passed, stable and durable operation 20V transformer. Easy to install 2 pin non-polarity wires support easy and quick installation, 16.4 ft cable is long enough to plug it into an electrical outlet inside or outside your house. Packing list 1 x doorbell power supply, 1 bag 50 pieces of white cable clips The brand mentioned above is just for demonstrating compatibility.

24 Volt C Wire Adapter plug the doorbell power adapter into your standard 120V outlets and converts to 24volt, 300mAAC current. Widely Use this 24 volt doorbell transformer is widely compatible with many doorbell Simplisafe, Ring doorbell, Eufy and smart thermostat Nest, Ecobee, Honeywell, Sensi, etc. Certification the doorbell power supply has certification, the power connector c wire adopt stable and durable material, comes with short-circuit protection and waterproof design, enables you to charge your devices safely. Easy to Install just a few minutes to connect this 24v transformer to your doorbell thermostat you can charge it directly and don't worry about Low batter problem anymore. Package Include 1 x 16.4 feet5 m c wire power adapter, 50 white LPJ088 cable clips, makes the installation easier.

DESIGNED FOR BLINK VIDEO DOORBELLONLY compatible with Blink Video Doorbell. No need to change the battery or spend your money on blink batteries.. LONG CABLE16.4ft5m long extension power cable allows you to position your doorbell inside or outside your house without worrying the distance.. FCC UL CERTIFIED 5V Power adapter is UL certified, safe and no battery damage, let your blink doorbell provide continuous security.. EASY TO INSTALLJust put our battery in the doorbell, it'll work and keep your doorbell always charging.. OUR SERVICEALERTCAM dedicates to provide high-quality and long-lasting security camera accessories for all our customers. If any problem, do not hesitate to contact us for help..

WIDELY MATCH - Universal design for all versions for your Ring doorbell, Ring Video Doorbell 2 and Ring Video Doorbell Pro. Assemble along the wall from your outlet to the doorbell without the existing doorbell or wiring. Easy installation and be able to set up in minutes. 18V DOORBELL TRANSFORMER -For all versions of Ring Video Doorbells, Nest Hello Doorbell Zmodo Smart Greet Wi-Fi Video Doorbell, this is the one designed for you and your doorbell. Thousands of times testing, we found that 18V 800mA is the best choice for keeping doorbells charged. Wires are made of best materials, you don't need to worry if the transformer will be broken after a few months of using.. HEAVY DUTY - Voyaux Ring doorbell pro charger cable for video doorbell is certificated. Its ultimate goal is to get fairly safe products for you, and to contribute to personal health and property safety. With an AC output of 18V 800mA, a perfect tool to meet your needs. RAPID CONVENIENT - A quick fix to the problem of Low battery, which means your Ring video doorbell can work for you any time you'd like, with no uninterrupted operation and viewing influence, that's what we want it do for you, and that's to say you don't need to remove your doorbell in order to charge up the battery.. 2-YEAR WARRANTY - Just contact us any time you want for the problem of the product, we will try our best to solve your problem. And if the doorbell transformer defected while using within 2 years, please also contact us, we will replace a new one for you and you don't need to return the defective one..

Eliminate doorbell thermostat underpower hassle 24V 40VA plug-in transformer replaces and upgrades underpowered transformer with this 24V AC transformer. Specification input voltage 120 VAC, 60Hz Output voltage 24V, 40VA. Safe and stable auto-resetting PTC fused secondary, LED green power indicator, positive negative screw terminals. Universal compatibility this 24v transformer is compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell doorbell. Also compatible with Nest, Ecobee, Honeywell, and Sensi smart thermostats, and other devices that require constant 24-volt power for operation.

16V 30VA Doorbell TransformerInput 120V, 60 HZ Output 16V at 30 VA Low voltage hardwired doorbell power supply for residential, commercial and industrial use, offers reliable performance, safe to use. UL CertificationThis doorbell transformer has UL Certification, which greatly improves safety and longevity, as transformer without this certification have a higher risk of circuit induced fire house problems during operation. CompatibilityThe transformer doorbell power supply compatible with Ring doorbell transformer, Nest, Ecobee, Sensi and Honeywell thermostat and doorbells. Easy to InstallThe 16V doorbell transformer is easy to replace and install, and can be screwed, threaded, or threaded clamped to the electrical box, and we provide clear wiring diagrams for proper wiring. Professional Customer ServiceMaxdot doorbell transformer focuses on high quality product and improving good customer service, if any doorbell transformer can't meet your expectation, please contact us and we will try our best to solve the problem If the problem cannot be solved, you will be refunded or exchanged.

24V 40VA Doorbell TransformerInput 120V, 60 HZ Output 24V at 40 VA Low voltage hardwired doorbell power supply for residential, commercial and industrial use, offers reliable performance, safe to use. UL CertificationThis doorbell transformer has UL Certification, which greatly improves safety and longevity, as transformer without this certification have a higher risk of circuit induced fire house problems during operation. CompatibilityThe transformer doorbell power supply compatible with Ring doorbell transformer, Nest, Ecobee, Sensi and Honeywell thermostat and doorbells. Easy to InstallThe 24V doorbell transformer is easy to replace and install, and can be screwed, threaded, or threaded clamped to the electrical box, and we provide clear wiring diagrams for proper wiring. Professional Customer ServiceMaxdot doorbell transformer focuses on high quality product and improving good customer service, if any doorbell transformer can't meet your expectation, please contact us and we will try our best to solve the problem If the problem cannot be solved, you will be refunded or exchanged.

Wide compatibility 110120V converted to 24V 500MA, using American cables to power popular smart doorbells. Compatible with video doorbells such as Ring, Arlo, Nest, Wyze, Eufy, etc.. Safe and convenient 24V safe voltage output, compliant adapter can continuously power the intelligent doorbell.. Installation and maintenance The adapter only needs to be wired along the wall from the socket to the doorbell.. Material The adapter is composed of EI silicon steel sheet and enameled copper wire inside, and is made of fire-resistant plastic and pure copper wire outside. Stable quality and long service life.. After-sales serviceIf you are not satisfied with our products, you can get a 30-day refund or if you encounter any problems in using our products, please feel free to contact us and we will reply to you within 24 hours..

Widely Compatibility Ring Doorbell Adapter Power Don't need a resistor. Doorbell power supply work for Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, for Nest Wifi Doorbell, for Nest Hello, for Skybell Wifi Doorbell, for Simplisafe video doorbell etc.. Convenient Hassle-free This doorbell power adapter will keep your device constantly fully charged and you don't need to remove your doorbell in order to charge the battery anymore.. Wire Ring Design Easy Setup Doorbell power adapter with Wire Ring, just screw the wire ring with your ringbell and set up in minutes, Don't worry it will loose and fallen.. Long Cable Cord 16.4Ft 5M Long enough to reach your outlets, More convenient helps figuring out where to install it than others cord is 8-9Ft.. More Info Input AC 120V 60Hz Output AC 18V 500mA Wire Cord length 5M 16.4 feet..

UNIVERSAL DESIGN- The power adapter compatible with the Ring Video Doorbell, Ring Video Doorbell 2 and Ring Video Doorbell Pro. It also fit most of Thermostat. You can now let your video doorbell or thermostat operate continuously without the need to remove it to change its battery, with no uninterrupted operation and viewing influence.. POWER SPECIFICATION- Plugs into your standard 110v120v outlet and converts to 24 volt500mA AC, Powers your popular smart thermostats and doorbells that require 24 volt power for operation.. EASY TO INSTALL- Assemble along the wall from your outlet to your doorbell or thermostat without the existing doorbell or wiring. Easy installation and can be set up in minutes.. SAFE NO MORE HASSLE-Never charge your battery again, A quick fix to the problem of Low batter you can charge it directly plug adapter into outlet and power up. that means you don't need to remove your thermostat in order to charge up the battery. With an AC output of 24V500mA, a perfect tool to meet your needs.. LIFETIME- Just contact us any time you want for the problem of the product, we will try our best to solve your problem. And if the doorbell transformer defected anytime, please also contact us, we will replace a new one for you and you don't need to return the defective one..

The power adapter compatible with the Ring Video Doorbell.

ONE FOR ALL RING DOORBELLS - One design to fit all versions of Ring Doorbell Zmodo Smart Greet Wi-Fi Video Doorbell, this is the one designed for you and your doorbell.This Ring transformer is compatible with the Ring Video Doorbell, Ring Video Doorbell 2 and Ring Video Doorbell Pro. Don't worry if you want to update your Ring, let go the hassle of charging your battery by directly connecting the Ring Doorbell and the Power adapter.. UNIVERSAL DESIGN SIMPLE SETUP - Universal design for all versions for your Ring doorbell, Ring Video Doorbell 2 and Ring Video Doorbell Pro. Assemble along the wall from your outlet to the doorbell without the existing doorbell or wiring. Easy installation and be able to set up in minutes. SAFE SOUND - SIKOIMATE Ring Doorbell power supply is certificated . Its ultimate goal is to get fairly safe products for the market, and to contribute to personal health and property safety. With an AC output of 18V500mA, a perfect tool to meet your needs. RAPID CONVENIENT - A quick fix to the problem of Low batter which means your Ring doorbell can work for you any time you'd like, with no uninterrupted operation and viewing influence, that's what we want it do for you, and that's to say you don't need to remove your doorbell in order to charge up the battery.. SIKOIMATE MONEY SAVING RING ACCESSORIES - We have a gift for both regular customer and new customers. Get discount while purchasing Ring Video Doorbell Pro angle and this adapter. Sikiomate try best to make 100satisfaction of customers1. Response within 10 hours 2. High quality material 3. Accept advice for the goods .Best quality to ensure customers have a wonderful experience when they are shopping.

Plug your Ring Video Doorbell into a standard indoor outlet for 247 power and protection, even if your home doesnt have existing doorbell wires.. Plug-In Adapter installs in minutes and keeps your doorbell powered without hardwired installation or taking batteries out to recharge them. Insert the doorbells rechargeable, Quick Release Battery Pack. Plug-in Adapter will keep the battery charged inside the doorbell. Insert the doorbell's rechargeable, Quick Release Battery Pack. Plug-in Adapter will keep the battery charged inside the doorbell.. Includes a 10-foot cable with clips and comes with built-in short circuit protection.. Connects to standard indoor power outlets only.. Works with Video Doorbell Wired, Video Doorbell 2nd Generation, Video Doorbell, Video Doorbell 2, Video Doorbell 3, Video Doorbell 3 Plus, Video Doorbell 4, Battery Doorbell Plus, Video Doorbell Pro, and Video Doorbell Pro 2. Not compatible with Peephole Cam or Video Doorbell Elite.. Power input 100-240V AC, 5060Hz, 0.5A Power output 24V DC, 0.5A, 12.0W. Dimensions 2.8in 7cm x 2.2in 5.5cm x 1.5in 3.7cm.

PRODUCT PARAMETERS - Input 120V AC 60Hz 0.2A Output 18V AC 500mA. Provide you with all 18v power output transformer doorbell equipment, enjoy convenient life. UNIVERSAL COMPATIBILITY - Wide use in popular smart thermostats, Nest, Ecobee, Sensi and doorbells, Ring Video Doorbell, Ring Video Doorbell 2 Ring Video Doorbell Pro, Nest, etc.. EXTRA LONG CABLE Our cable is 26FT315 inch and you don't worry about the distance between the socket and the thermostat. You can easily plug it into an electrical outlet inside or outside your house.. EASY TO USE Easy installation, don't need a resistor. Assemble along the wall from your outlet to the doorbell and thermostat without the existing doorbell or wiring.. AFTER-SALES SERVICE TL-JIYPU provides 12-month global warranty period and lifetime friendly after-sale service. Any quality problem, free for new, any questions can contact us..

FORM FUNCTION - Forgot the hassle of changing your battery by directly connecting your Ring Video Doorbell to the power adapter. The 2.5m long cable can be set up in minutes. output of 18V500mA. CONTINUOUS CHARGING - You can now let your video doorbell operate continuously without the need to remove it to change its battery. This enables uninterrupted operation and on-demand viewing.. NO BATTERY DRAINAGE - Our Power Adapter allows you to keep your Ring Doorbell always juiced up. No more downtime and interruptions due to empty batteries.. BUILT TO LAST - Our power supply adapter is made of high-grade, rugged materials and works seamlessly with your Ring Video DoorbellDoorbell 2Doorbell ProDoorbell Wired, Zmodo Smart Greet Video Doorbell, eufy Security Doorbell, and Arlo Video Doorbell.. WASSERSTEIN 3-MONTH WARRANTY - If any of our products fail to meet your expectations, please get in touch with us and we will try to resolve the issue. If we can't resolve the problem to your satisfaction, you will get a full refund or replacement - no questions asked..

AC 18V 500mA Input AC120V, 60Hz. Output AC18V, 500mA. Length 16.4ft 500cm. Compatible With Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Hello Video Doorbell,for Zmodo smart greet wifi doorbell.. Connecting You Doorbell Ring This Power Supply Adapter for the Ring can connect you Ring Video Doorbell to the power adapter directly,forget the hassle of charging your battery and let your Ring continuous operation.. Easy Installation Assemble through door hole and simply connect the wire to your Ring,install and setup can be completed in a few minutes,no need for an existing doorbell or new wiring,can be installed on any door.. Necessary for your Doorbell It's the most simple and convenient way to operate your Video Doorbell,with the Power Adapter,you can let your Video Doorbell continuously running and no need to remove your doorbell for charging the battery.. Universal Compatibility With an AC output of 18V500mA and super long 16.4 ft cable,no worries about the power adapter isn't long enough to connect the outlet to the doorbell.Note Please review the Voltage requirements of your doorbell before purchasing..