Best 16V 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 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

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

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.

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

Powering thermostats and doorbells: replacing underpowered transformers

<p><b>[Specifications]</b> Input voltage: 120 v AC, 60 Hz Output voltage: 16 v AC at 30 VA.

<p><b>[Convenience] </b>The replacement can be completed in a short time. Tighten or screw it to the electrical box for safe handling.

Non-regenerative thermal overload protection

Grounding wire

Pre-stripped primary side pigtails

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.

16-volt, 10VA transformer for use with most NuTone door chimes; order in standard package of six to help assist with your planning and still retain that economical edge

Quick install transformers, built to last so you should have fewer call backs

One 16-volt, 10VA transformer needed for a single chime

[Product specifications]: 16V 30VA doorbell transformer: low voltage hardwired door chime transformer, Primary Input: 120V AC 60Hz, Secondary Output: 16V AC 30 VA, Class B insulation, Class 2 transformer

[Compatible with]: For use with many doorbell transformers, Ring Doorbell, Ring Doorbell 2, Ring Video Doorbell Pro, Nest Hello Video Doorbell

[Easy to install]: screw down and thread clamps to electrical box.

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

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

【Power Multiple Doorbells】: 16V 30VA door bell transformer, great replacement for existing underpowered transformer, like 10V 5VA / 16V 10VA. Sufficient power to control single or multiple doorbell and door chimes in one home.

【Universal Compatibility】: 120V AC to 16V AC, compatibles with Ring Video Doorbell Pro, Ring 2, Ring 3, Google Next Hello, Unifi G4 and other devices that require constant 16 volt power for operation.

【Easy Installation】: Twist the black screw and thread clamp to electrical box, comes with 3 wire nut for convenient wire connection. Can be also mounted on the wall. Note: Turn off your electrical breaker first.

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

16V, AC, 10VA Transformer

For Use With Chimes, Bells, Buzzers & Other Applications Within Specified Ratings

UL & CSA Approved

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

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

Wide Usage: low voltage power sources for residential, commercial, and industrial uses. compatible with Ring Video Doorbell Pro, Nest Hello Video Doorbell, etc.

Easy to Install: Turn off power before installation, then screw down or threaded clamp to electrical box, simple to wire up

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;

Hardwired Transformer: Input: 120v AC 60Hz; Output: 16V AC 30VA

UL Registered: the doorbell transformer has passed the UL certification; Safe and long lasting

Class B Insulation: the long-term operating temperature of the 24V transformer is 130 degrees Celsius/ 266 degrees Fahrenheit and will not break the doorbell and thermostat due to excessive temperature

SPECIFICATIONS: MRO furnace transformer 40va gives a stronger connection to the power system & supports greater load; primary voltage is120 V, 50/60 Hz; secondary voltage is 24V 40VA; class B insulation and class 2 transformer

HIGHLY COMPATIBLE: Ring doorbell transformer is compatible with furnaces/HVAC equipment and other devices that require constant 24-volt power for operation, this 24v doorbell transformer is ideal for use in industrial automation and control systems

FUNCTIONALITY: Furnace transformer 24v converts high voltage120 VAC to low voltage 24 VAC, 50/60 Hz and Provides you with high efficiency and low heat generation, eliminating the issues caused by low power