RF433 thermostat can be controlled wirelessly across the wall, no pre-built wiring is required, and the low-power chip allows you to heat without worrying about energy consumption. The RF433 receiver is directly connected to the wall-mounted boiler, which is more convenient to use. Once the thermostat is paired with the receiver, the receiver do the heating, making it more flexible to use. Classic white set, suitable for all apartments and single-family homes. Receiver: The receiver is directly connected to the wall-mounted boiler, there is no complicated wiring problem, no professional is needed, you can easily. External dual-band antenna, enhanced reception, longer communication distance, more stable signal. Colour:As Shown Material:ABS Package Contents: 1 * WiFi Wireless Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.