Features: Temperature control range: 0~70°C / 32~158°F. Programmable settings for time, week, and temperature range. 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. Switch between Celsius and Fahrenheit temperature units. Daylight saving time (DST) setting available. Low battery alert icon displayed when battery replacement is needed. Current temperature correction and system reset function. Built-in safety features include relay control, fuse protection, and flame-retardant PC material socket. Specifications: Material: Flame-retardant PC Operating temperature range: 0~70°C / 32~158°F Measurement resolution: ±1°C / ±1°F 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 indication: ≤0.0°C displays LL High temperature indication: ≥70.0°C displays 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)