24V 40VA Thermostat and Doorbell Transformer Power Supply Compatible with Nest,Ecobee, Nest Hello,Sensi and Honeywell Thermostat and All Versions of Ring Doorbell

24V 40VA Thermostat and Doorbell Transformer Power Supply Compatible with Nest,Ecobee, Nest Hello,Sensi and Honeywell Thermostat and All Versions of Ring Doorbell

• 【Specification】Input: 120 V/AC 50/60 HZ; Output: 24 V/40 VA.XXSZHY doorbell transformer is safe; Built-in thermal cut-off switch offers an extra layer of safety, shutting off power in the event of excessive temperature. 
• 【 CERTIFIED AND SAFE USE】 this 24 volt transformer is certified, offers reliable performance.offering plenty of power for single or multiple thermostats and doorbells at the same time.
• 【Compatible】Compatible with Nest Hello Doorbell, Sensi smart thermostats, Ecobee, Saswell, Nest, Sensi and Honeywell Thermostat.smart doorbells (series, Nest Skybell, etc),zone controlled HVAC systems, surveillance cameras, or any other device requiring 24V AC power; Note: the brand names above is only for demonstrating compatibility.
• 【Easy to install】Simply mount to electrical box via threaded connector or screw down.
• 【SERVE】If you encounter product problems, please contact the store in time to replace the product.All transformer come back by a 30-day change period, 24 month maintenance period.