Widely Match - 24v universal US power cable powers popular smart thermostat. Compatible with Nest, Ecobee, Honeywell, Emerson, Ecobe4 Smart WiFi thermostat. Continuously converts 110/120v to 24volt 500ma.Quick and Convenient - "œLow battery"? issues is solved. The adapter is a quick and convenient way to charge your smart thermostat continuously. Now get rid of all battery issues and with no more interrupt or any safety concerns.Certificated Safety Adapter - A certificated battery backup is stable and sturdy for years use. A waterproofed 16.4ft cable is long enough for you to put the thermostat anywhere higher or lower on your wall.Easy to Install and Maintain - Assemble along the wall from your indoor outlet to the thermostat. The non-polarity wire is much easier for quick installation.What You Get - 1 transformer adapter with 10 cable clips. 30-day money back. 24/7 professional service team. Contact if you have any questions.