This thermostat is made of quality material, durable and safe to use. It is easy to install and convenient to use. Features children lock function to prevent from misoperation and data memory fuction when there is power failure. Features: It uses high reliability single chip which has excellent performance and strong anti-interference ability. Children lock protection for preventing kids from misoperation. Data memory function when there is power failure. Holiday mode allows you enjoy a more comfortable temperature when go home from holiday. Easy to operate, You can also use the button on the thermostat to set different working modes. Specification: Condition: 99.99% Brand Material: ABS, Plastic Color: White Power Supply: 2*AA Battery(not included) Power: