24 Volt Power Adapter/Transformer,C-Wire Adapter Thermostat，Compatible with All Versions of Ring Doorbell and Thermostat for Ecobee,Sensi and Honeywell(25Ft Cable)

Attention:To prevent no power output, you must ensure that the terminals are stripped and securely clamp the screw terminals into the thermostat to maintain good contact.
personal advice： required to ask the person who understands the electrician to install.
Be advised, the initial ends on this wire are treated and if you cut them to shorten it, the copper is tougher to get into the thermostat with pinch vs. screw terminals.Will result in no power output.For Nest E connected this adapter to the C and R pins (R also having the HVAC’s Red line connected),For Nest Learning Thermostat,3rd generation connected this adapter to the C and RC pins

HOME USE: Plug the transformer into your standard 120V outlets and converts to 24volt AC current.Please note that the c wire adapter is not compatible with the Nest learning 3rd generation
SUPPORTED DEVICES: The 24v power adapter can not only power for popular smart thermostats such as for Honeywell, for Ecobee, for Emerson , for Sensi, but also can convert to 24 volt AC current for other devices that require 24v current for operation
TECHNICAL SPECIFICATIONS: input voltage is 120 V AC, 60 Hz; Output voltage is 24 V, 300mA/AC，Directly tested with a multimeter is no-load voltage: AC26.6V-27.5V Note: The brand above is only for demonstrating compatibilityyy
INSTALLATION :To prevent no power output, you must ensure that the terminals are stripped and securely clamp the screw terminals into the thermostat to maintain good contact，2pin non-polarity wires to ensure easy and error free installation for installers of all skill levels and knowledge bases,If your wiring is complicated, please ask a professional electrician for help
EXTRA LONG CABLE: 7.6M (25ft) long cable enables you to install the cable along the wall and connect to the electrical outlet inside or outside.For Nest E connected this adapter to C and R pins (R also having the HVAC’s Red line connected),For Nest Learning Thermostat,3rd generation connected adapter to the Cand RC pins
For Nest learning 3rd generation. White wire to C, white/ grey striped wire to same (along with) the red wire to RC,For Nest E connected this adapter to the C and R pins (R also having the HVAC’s Red line connected)
For Nest learning 3rd generation Y1 (connected to the blue wire) / G (connected to the green wire) / RC (connected to the red wire and the power adapter grey and white wire, RC is to be connected to the 2 with the wire) W1 (connected to the white wire) C (connected to the power adapter white wire) must be satisfied with having the above wiring positions