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. 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: 1°C at 1000°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 x 9V battery (not included) Probe Sensor Length: 95 cm Product Size: 16 x 5.2 x 3.2 cm Product Weight: 122 g Package Size: 18.5 x 10 x 4.5 cm Package Weight: 205 g Note: This instrument cannot operate when probes are disconnected. Packing List: 1 x 4-Channel K-Type Digital Thermometer 4 x Probe Sensor 1 x Storage Bag 1 x User Manual (English)