24 Volt Transformer Compatible Ring doorbell Transformer 24vac Transformer 120vac to 24vac Power Adapter Input AC 110V - 120V 60Hz Output AC 24V 1660mA UL Listed

UNIVERSAL COMPATIBILITY: 24v transformer is compatible with Ring video doorbell, Ring video doorbell 2, ring video doorbell pro, Nest Skybell doorbell, Nest, Ecobee, Honeywell ,emerson Sensi smart thermostat, and other devices that require constant 24 volt power for operation UL CERTIFIED AND EASY INSTALLATION: Trusted US Brand and UL Certified transformers to Eliminate Doorbell / thermostat under power, With this 24V 40VA plug in transformer, provide Constant power supply to smart products and devices and Save on battery cost