Features: Small size and light weight. Double body protection, safer operation, easy to carry. Color: Black Material: Plastic + metal Size: 13*7.3*3.3cm Specifications: Item Name: Gas Detection Alarm Quantity: 1 DIY Supplies: Electrical Gas Type: Combustible Gas With LCD Display Or Not: Yes Is Smart Device: No Measuring Range: 0-50000PPM / 0-100%LEL Measure Gas: Combustible gas, natural gas, coal gas, methane,Ethane CGD02A: PPM/LEL% CGD01: Only LEL% LCD Screen: Only CGD02A Alarm Mode(CGD02A): Sound alarm and Analog column Accuracy: 1PPM / 1%LEL Preheat Time: 30 seconds Calibration Method: Auto Calibration after 30 seconds Auto Power-off: 10 minutes after no operation Working Current: 190mAh Temperature Measure Range: 0-50 degree/32-122F Celsius and Fahrenheit Switch: Only CGD02A Working Temperature: 0-50 degree Working Humidity: 0-70%RH Flexible Hose: 270mm Usage 1: Combustible Gas detector Note: -There might be little error of size for manual measurement. -The colors deviation might differ due to different monitor settings, please kindly understand. Packing list 1*Tester 1*Cloth Bag 1*Manual