This programmable wireless thermostat is designed to automatically control electric heaters in cold/winter areas or control electric refrigeration units in hot/summer areas. It will automatically turn the heater on and off based on your target temperature or a preset time delay to maintain a stable room temperature for comfort and energy saving. Easy to Use: It consists of a remote control thermostat and a power outlet, plug and play. Wireless Remote Control Design: Built-in temperature sensor to control your heater and air conditioner within the maximum range. 20m range. Programmable Design: You can set different target temperatures in different periods to achieve comfort and save energy. Backlit LCD: Large LCD screen with green backlight showing current temperature, target temperature, heating/cooling clock/schedule, providing a clear view even in dark environments. 12H/24H mode and °C/°F mode can be switched. Adjustable heating/cooling mode: Used to control heating or cooling equipment. Heating program: P1~P4, Cooling program: P5~P8. Flexible use: One remote thermostat can be combined with multiple outlets. Child lock function: 10 minutes without operation, the remote control thermostat will automatically lock. Reset function: Delete all settings with one key and restore the factory settings. The remote control thermostat is designed with brackets and hanging holes and can be placed on a table or mounted on a wall. Note: Please read the user manual carefully before first use. </ul> <b>Specification:</b> Material: ABS + PC + Metal Plug Type: EU Plug/UK Plug/US Plug (Optional; EU Plug by default) Voltage: 220V-240V (EU)/220V-240V (UK)/110V-120V (US) Max. Heating Program: P1~P4 Cooling Program: P5~P8 Temperature Range: 0~60°C/32~140°F Temperature Accuracy: ±1°C/±1.8°F. Current Resolution: 0.1°C/°F. Resolution: 1°C/°F Thermostat Power Supply: 2 x 1.5 AA Batteries V (not included) Transmission range: 20 meters in open area Transmission frequency: 433.92 MHz Thermostat size: 12.4 * 8.2 * 4.2 cm / 4.9 * 3.2 * 1.7 inches Shipped quantity: 1 piece </ul>