Specifications: 24v transformer Input voltage: 120 V/ AC, 50 / 60Hz
Output voltage: 24V AC at 40 VA
Compatible with Nest Hello Doorbell, Sensi smart thermostats, Ecobee, Saswell, Nest, Sensi and Honeywell Thermostat.Ring Video Doorbell 2, Ring Video Doorbell Pro, Ring Video Doorbell,Nest Skybell Doorbell, Ring Doorbell, Ring Doorbell 2, Ring Doorbell 3 Plus, Nest Hello video doorbell, Nest Thermostat, Nest doorbell, Eufy smart doorbell, Eufy Battery doorbell, Google nest doorbell, Zmodo Smart Greet Wi-Fi doorbell, Sky Bell doorbell, and other devices that require constant 24 volt power for operation.
Note!!!!: This product is not a Ring doorbell product, the brand mentioned above is only for demonstrating compatibility.