Features: Temperature control range: 0~70C / 32~158F. Programmable time, week, and temperature settings. Three operation modes: manual mode (always ON/OFF), thermostat mode, and thermo-timer mode with up to four programmable settings. 2.4GHz wireless auto connection technology. LCD screen with green backlight for easy viewing. 12-hour or 24-hour time format option. Switchable between Celsius and Fahrenheit. Daylight saving time (DST) setting available. Low battery alert icon indicates when battery replacement is needed. Current temperature correction and system reset function. Built-in relay control and fuse protection for safety; socket made of flame-retardant PC material. Specifications: Material: Flame-retardant PC Operating temperature range: 0~70C / 32~158F Measurement resolution: 1C / 1F Transmission frequency: 433.92 MHz Maximum transmission range: 20 meters in open area Power supply: 2 x 1.5V AAA batteries (not included) Low temperature display: 0.0C shows LL High temperature display: 70.0C shows HH Remote thermostat control dimensions: 109 x 60 x 21mm / 4.29 x 2.36 x 0.83in Plug-in socket dimensions: 113 x 66 x 35mm / 4.45 x 2.60 x 1.38in Item weight: 192g / 6.79oz Package weight: 235g / 8.31oz Package dimensions: 12 x 10 x 7cm / 4.72 x 3.94 x 2.76in Package contents: 1 x Remote thermostat control 1 x Plug-in socket 1 x User manual (English)