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: Black Material: ABS Plastic Measuring Range: -50~1350°C / -58~2462°F / 223~1623K Temperature Accuracy: ±(0.015%rdg+1°C/1.8°F) Temperature Resolution: <1000°C: 0.1°C; >1000°C: 1°C Operating Temperature: 0~50°C / 32~122°F Operating Humidity: 10%~90%RH Storage Temperature: -10~60°C / 14~140°F Storage Humidity: 10%~75%RH Power Supply: 1 * 9V Battery(NOT Included) Probe Sensor Length: 95cm / 37.4in Product Size: 16 * 5.2 * 3.2cm / 6.3 * 2 * 1.26in Product Weight: 122g / 4.32oz Package Size: 18.5 * 10 * 4.5cm / 7.3 * 3.94 * 1.77in Package Weight: 205g / 7.23oz Note: This instrument can't work when probes are disconnected. Packing List: 1 * 4-Channel K-Type Digital Thermometer 4 * Probe Sensor 1 * Storage Bag 1 * User Manual(English)