Features 1、Digital LCD display with backlight, easy to read values. 2、K-Type thermocouple inputs, measure 4 different temperatures simultaneously. 3、Measuring range: -50~1350°C; °C/°F/K unit conversion. 4、Max./Min./Average values recording function. 5、Data hold function. 6、Auto Power off with no operation within 10 minutes. 7、With low battery indicator. 8、5 operation buttons, convenient to operate. Specification 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) Package List 1 * 4-Channel K-Type Digital Thermometer 4 * Probe Sensor 1 * Storage Bag 1 * User Manual(English)