Best 18V Door Bell Transformers in 2026

【Power Multiple Thermostats/Doorbells】Replace and upgrade underpowered transformers with this 24V AC Transformer, while providing ample power to single or multiple thermostats and doorbells

【Specification】Input: 120 V/AC, 60 HZ; Output: 24 V AC at 40 VA, reliable performance and safe to use

【Wide Applications】Compatible with most brands of doorbells or thermostats, low voltage hardwired doorbell power supply for residential, commercial and industrial use

【Power Multiple Thermostats/Doorbells】Replace and upgrade underpowered transformers with this 16V AC Transformer, while providing ample power to single or multiple thermostats and doorbells

【Specification】Input: 120 V/AC, 60 HZ; Output: 16 V AC at 30 VA, reliable performance and safe to use

【Wide Applications】Compatible with most brands of doorbells or thermostats, low voltage hardwired doorbell power supply for residential, commercial and industrial use

16V 30 VA doorbell transformer: 16-volt, 30 VA low voltage hardwired door chime transformer

Handy use: power single or multiple door chimes in one home with ease, replace the old and under powered doorbell transformer for better performance

Input: 120V, 60 Hz; Output: 16V at 30 VA

Power up multiple thermostats and doorbells: replaces and upgrades underpowered transformer with this 24V transformer, offering plenty of power for single or multiple thermostats and doorbells at the same

Universal compatibility: this 24 volt transformer compatible with 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

SPECIFICATION: Input is 120 Volt, 60 HZ; Output: 24 Volt/ 40 VA; Tip: The load voltage(when the doorbell is running) is 24V and the output of no-load voltag is about 27V

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

Eliminate doorbell/ thermostat underpower hassel: 24V 40VA plug in transformer, replaces and upgrades underpowered transformer with this 24V AC transformer, offering plenty of power for your thermostats and doorbells

Specification: input voltage: 120 VAC, 60Hz; Output voltage: 24V, 40VA; Tip: The load voltage (when the doorbell is running) is 24V and the output of no-load voltage is about 27-28V, normal function and won’t affect any use; When testing the product, pay attention to use an AC voltmeter or a multimeter to test the output voltage value and use a voltage tester to measure the accurate voltage output data

Safe and stable: auto-resetting (PTC) fused secondary, LED green power indicator, positive/ negative/ screw terminals

CHIME WITH TWO SOUNDS: Classic two-note “Ding Dong” sound for the front door button and has an additional connection with a separate "Dong" for the rear or side door

DIMENSIONS: Cover: 9” W x 5” L Base: 7-1/8” W x 4-5/8” L

16-VOLT, 30VA DOORBELL TRANSFORMER: For powering up to three hardwired doorbell chimes or modern smart video doorbells

CHIME WITH TWO SOUNDS: Classic two-note “Ding Dong” sound for the front door button and has an additional connection with a separate "Dong" for the rear or side door

DIMENSIONS: Cover: 7-1/4” W x 4-1/8” L Base: 7” W x 3-7/8” L Overall Depth: 2”

16-VOLT, 30VA DOORBELL TRANSFORMER: For powering up to three hardwired doorbell chimes or modern smart video doorbells

Replace your underpowered doorbell transformer.

Optimize the performance of your Video Doorbell Wired, Video Doorbell Pro, Video Doorbell Pro 2 with increased power.

Easily replaces most North American doorbell transformers.

【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.

FEATURES：18V Doorbell Power adapter, plugs into your standard 110 v/120 v outlet and converts to 18 volt 500 ma AC current.

INSTALL :Connect the two ring terminals to the screws at the back of the doorbell. The wire ring design makes it easier to install and helps ensure the adapter is firmly connected to the doorbell. The wires are sturdy and flexible enough not to be easily torn.

COMPATIBILITY:Replacement for all video doorbell, compatible with Ring Video Doorbell Pro, Nest Hello, etc. ; Note: the brand mentioned above is only for demonstrating compatibility.

Doorbell/Thermostat power solution: 24Vac 40VA wall transformer, using this Transformer to replace and upgrade the insufficient power transformer, can provide sufficient power for your thermostat and doorbell, save the trouble of frequent battery replacement

Specification: input voltage: 120 VAC, 60Hz; Output voltage: 24V, 40VA ,No-load output voltage: 26.6V,SAFE AND STABLE auto-resetting (PTC) fused secondary, LED green power indicator

Compatible With: This transformer compatible for Honeywell, Nest, Ecobee, and Sensi smart thermostats; Also compatible with Video Doorbell, Video Doorbell 2, Video Doorbell Pro, Nest Skybell Doorbell

➡︎ Easily Replace your Old Transformer - Plug in Alarm System Transformer for your Security System

➡SPECIFICATION: input voltage: 120 VAC, 60Hz; Output voltage: 16.5V, 40VA SAFE AND STABLE auto-resetting (PTC) fused secondary, LED green power indicator

➡ELIMINATATE DOORBELL UNDER POWER HASSEL:16.5V 40VA plug in transformer, replaces and upgrades underpowered transformer with this 16.5V AC transformer, offering plenty of power for your doorbells

✔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

Wide Usage: Input 120V AC，60Hz, Output 16V AC，30VA for residential, commercialand industrial low voltage power supply. Power single or multiple doorbells, compatible with Ring Video Doorbell Pro, Nest Hello Video Doorbell, ZmodoWiFi Doorbell, SkyBell,etc.

Strong power: Resolve energy issues caused by Low-power supply, perfect replacement ofyour old 10Va or 16Va doorbell transformers for better performance.

Fuse protected: built-in fuse, fuse open when overload to prevent fire hazard.

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.

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.

Eco-friendly: Eco-friendlyzinc plating technology , no pollution.

Wide Usage: Input 120V AC，60Hz, Output 8V/10VA, 16V/10VA or 24V/20VA.

Strong power: Resolve energy issues caused by Low-power supply, perfect replacement of your old doorbell transformers for better performance.

Fuse protected: built-in fuse, fuse open when overload to prevent fire hazard.

Safe and Guaranteed Quality: UL certified, PTC design for circuit protection, avoid damage the components in the circuit; Auto resetting, with LED green power indicator, positive/ negative/ screw terminals

Specification: input is 120V/ AC, 60 HZ; Output: 16V/ 30 VA; Tip: the load voltage (when the doorbell is running) is 16V and the output of noload voltage is about 18V, it is normal situation and won't affect any use; When testing the product, pay attention to use an AC voltmeter or a multimeter to test the output voltage value and use a voltage tester to measure the accurate voltage output data

Easy Installation: output with screwing the cable on the terminals, you can arrange your cables freely according to the length you need, to make the wires neat; Please notice: only equip with plug in transformer, no extra wires included

COMPATIBILITY: Video Doorbell Transformer compatible with Video Doorbell 2020 release, Video Doorbell 2/3/3plus/4, Video Doorbell Pro /Pro 2, Video Doorbell Wired (NOT include Doorbell and Battery).

CONTINUOUS CHARGING: Doorbell power supply uses 18V 500mA AC transformer to charge the Doorbell, no need to replace the battery frequently. It is recommended to make sure the battery is fully charged before use

SATETY PROTECTING: Door bell Transformer has safety certification. Using high-quality PVC weatherproof material, it has the characteristics of weatherproof, overcurrent protection, overvoltage protection, and short circuit protection. Protect your property and personal safety.

【SUPER COMPATIBILITY】The 18v doorbell transformer is compatible with various brands of doorbells, including but not limited to: Ring, SkyBell, Google Nest, Vivint, Doorbell, Blink. The doorbell transformer frees you from the trouble of battery strikes and provides a steady stream of power for the doorbell.

【DOORBELL TRANSFORMER SPECIFICATIONS】Plug the doorbell transformer into the AC/120v wall outlet, and it can be converted into 18v/500mA output power. The cable length of the doorbell power adapter reaches 10.8ft/3.3m, which can be matched to the outlet at a longer distance.

【EASY TO INSTALL】The two cables of the doorbell plug in adapter do not need additional resistors, and do not need to distinguish between positive and negative, there is no risk of short circuit. All you need to do is run the wire along the wall, then screw the doorbell transformer two cables into the back of the doorbell, and you're set up in minutes.

UL Certified Doorbell Power Supply Adapter,Critical Parameters- Input:AC 120V 0.07A 60Hz, Output:AC 18V 0.5A 60Hz,Module Type:JY48-180-050-UA UL Listed,Wire Length: 8 M/26.25 Feet

Compatible For All Door Bells- Not need one resistor and compatible for all versions of video doorbell, doorbell 2, door bell Pro, Nest wifi door bell & Skybell wifif door bell Etc.

More Key Performance- Sine and Classic AC door bell transformer, not dc switching power supply, make your bell sound more Agreeable and wonderful

Wide Compatiblity: Power your Doorbells (Ring, Nest, Arlo, Eufy, Wyze, Ring 1/2/2 Pro/3/3Plus/4/Pro, HLT, SimpliSafe, Ecobee, Sensi, Blink Video Doorbell, Google Nest, Zmodo Smart Greet, Skybell August Doorbell, Security Doorbell, Arlo Camera etc.) and other devices that require constant 18 volt power for operation, enables you to charge your devices safely.

Features: Input AC 120V, 60Hz 0.2A. plugs into your standard 110 v/120 v outlet and converts to 18 volt 500 mA AC current.(black)

Easy To Use: 2 pin non-polarity wires support easy and quick install, Assemble along the wall from your outlet to the doorbell without the existing doorbell or wiring. 26ft (8M/315 inches) extra long cable

✅This 24 Volt transformer is UL-certified, offers reliable performance

✅Input :120 VAC, 60 Hz; Output: 24 V/ 40 VA

✅Easy to install: screw down and thread clamps to electrical box

HQRP® Replacement Transformer; Replaces and upgrades underpowered transformer with this Tri-Volt (8V 20VA, 16V 30VA or 24V 30VA) AC transformer;

Input: 120V AC; Output: Tri-Volt (8V 20VA, 16V 30VA or 24V 30VA); UNIVERSAL COMPATIBILITY: this transformer compatible with 16v Doorbells, and other devices that require constant 8V 20VA, 16V 30VA or 24V 30VA volt power for operation;

UL Listed; Safety Features: High Efficiency and Reliability;

COMPATIBILITY: Doorbell Transformer compatible with Google Nest Doorbell (Battery) & Google Nest Doorbell (Wired), which is also for Blink, Arlo, Eufy, Wyze, SimpliSafe, Zmodo Smart Greet and other Video Doorbell for 18V AC Adapters(NOT include doorbell ). Note: Fully charge the nest battery before using it.

CONTINUOUS CHARGING: This nest doorbell transformer uses an 18V 500mA transformer to continuously charge the nest doorbell battery. There is no need for a chime, and there is no need to worry about the lack of power to the nest doorbell.

SATETY PROTECTING: Safety: The 18V nest transformer is within the applicable voltage range of the nest doorbell even when the transformer is no-load, making it safer. Protection measures such as overvoltage, overcurrent, short circuit, and overload protection are provided.

☛Compatibility: 18V 500mA AC Power Adapter compatible with Blink video Doorbell, Arlo Doorbell, Google Nest Doorbell, Eufy Doorbell and other doorbells require 18V AC input.

☛Fuse Protection: In the event of an accident such as a short circuit, It has over current protection, over voltage protection, overload protection, overheat protection, and short-circuit protection; Enables you to charge your devices safely.

☛Extra Long Cable: The charging cable is long (16 ft/5m),You can easily plug it into a power outlet inside or outside the house, even if the camera is far away from the camera. Cable is round and thin ,so it‘s not easy to break, durablethat.

COMPATIBILITY: Power supply for Blink Video Doorbell, Arlo, Google Nest, Eufy, Wyze, SimpliSafe, Zmodo Smart Greet and other Video Doorbell for 18V AC Adapters(NOT include Doorbell ).

No Frequent Battery Changes: The AC Doorbell Transformer powers the blink doorbell (not charges the battery). Pay attention to ensure that the 2 AA 1.5V Lithium Batteries are inside the doorbell when using it, otherwise it will not work.

Safety Protection: Supply cord has safety certification. Using high-quality PVC weatherproof material, it has the characteristics of weatherproof, overcurrent protection, overvoltage protection, and short circuit protection. Protect your property and personal safety.

COMPATIBILITY: Power supply for Blink Video Doorbell, Arlo, Google Nest, Eufy, Wyze, SimpliSafe, Zmodo Smart Greet and other Video Doorbell for 18V AC Adapters(NOT include Doorbell ).

No Frequent Battery Changes: The AC Doorbell Transformer powers the blink doorbell (not charges the battery). Pay attention to ensure that the 2 AA 1.5V Lithium Batteries are inside the doorbell when using it, otherwise it will not work.

Safety Protection: Supply cord has safety certification. Using high-quality PVC weatherproof material, it has the characteristics of weatherproof, overcurrent protection, overvoltage protection, and short circuit protection. Protect your property and personal safety.

Specification: input voltage: 120 VAC, 60Hz; Output voltage: 18V, 500mA; Tip: The load voltage (when the doorbell is running) is 18V and the output of no-load voltage is about 23.5V, normal function and won’t affect any use; When testing the product, pay attention to use an AC voltmeter or a multimeter to test the output voltage value and use a voltage tester to measure the accurate voltage output data

Compatible Devices:Compatible with Arlo, Nest, Eufy, Wyze, Arlo,Blink video doorbell, no need to remove the original battery, just connect the 18V500MA doorbell adapter to your video doorbell to charge your device for a long time and keep it charged

EASY INSTALLATION :Assemble along the wall from your outlet to the doorbell without the existing wiring. Super easy to install that can be able to set up in minutes