24VAC 40 VA AC Transformer Plug in with PTC Fuse Compatible with Ring Nest Doorbell Thermostats UL Certified

No more 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, 40 VA Safe and stable: Auto-resetting (PTC) fused secondary LED green power indicator Positive/negative/ground screw terminals UL certified: UL certification passed Easy installation: Electrical outlet mounting tab Universal compatibility: This 24v transformer is compatible with Ring video doorbell, ring video doorbell 2, Ring video doorbell pro, Nest Skybell doorbell, also compatible with Nest, Ecobee, Honeywell and Sensi smart thermostats, and other devices that require constant 24 volt power for operation. Note: The brand above is only for demonstrating compatibility.