This digital thermometer can be used to measure up to 4 different temperatures simultaneously.Features:Digital LCD display with backlight, easy to read values.K-Type thermocouple inputs, measure 4 different temperatures simultaneously.Measuring range: -50~1350°C; °C/°F/K unit conversion.Max./Min./Average values recording function.Data hold function.Auto Power off with no operation within 10 minutes.With low battery indicator.5 operation buttons, convenient to operate.Specifications:Color: BlackMaterial: ABS PlasticMeasuring Range: -50~1350°C / -58~2462°F / 223~1623KTemperature Accuracy: ±(0.015%rdg+1°C/1.8°F)Temperature Resolution: 1000°C: 1°COperating Temperature: 0~50°C / 32~122°FOperating Humidity: 10%~90%RHStorage Temperature: -10~60°C / 14~140°FStorage Humidity: 10%~75%RHPower Supply: 1 * 9V Battery(NOT Included)Probe Sensor Length: 95cm / 37.4inProduct Size: 16 * 5.2 * 3.2cm / 6.3 * 2 * 1.26inProduct Weight: 122g / 4.32ozPackage Size: 18.5 * 10 * 4.5cm / 7.3 * 3.94 * 1.77inPackage Weight: 205g / 7.23ozNote:This instrument can't work when probes are disconnected.Packing List:1 * 4-Channel K-Type Digital Thermometer4 * Probe Sensor1 * Storage Bag1 * User Manual(English)