16.5V 40VA Plug-in AUTO-Resetting AC Transformers, Doorbell AC Power Supply Adapter with PTC Fuse - Ring Doorbell and Thermostat, Compatible with Nest, Sensi, Honeywell (16.5V)

16.5V 40VA Plug-in AUTO-Resetting AC Transformers, Doorbell AC Power Supply Adapter with PTC Fuse - Ring Doorbell and Thermostat, Compatible with Nest, Sensi, Honeywell

• Upgrade with Confidence: This 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
• Easy to install:Output with screw terminals, You can freely cut the connecting cable and arrange the cable according to the length you need to make the installation simple and beautiful
• Safe and Stable Design: Equipped with an auto-resetting (PTC) fused secondary and an LED green power indicator, this transformer provides safe and stable power, ensuring uninterrupted operation of your doorbells and burglar alarm systems
• Compatibility Guaranteed: This transformer is compatible with Honeywell Ademco, DSC, ETC burglar alarm systems, as well as Video Doorbell, Video Doorbell 2, Video Doorbell Pro, Nest Skybell Doorbell, and more. Note that the brands mentioned are only for demonstrating compatibility
• Accurate and Reliable Output: With no-load voltage testing of about 18.5-19.5V, you can use an AC voltmeter or multimeter to test the accurate voltage output data of this 16.5V 40VA plug in transformer, which won't affect its normal function