This product is a combustible gas detector for fast and reliable detection of combustible gas on gas pipelines. It is widely used and is an indispensable tool for every professional.Features:1. Pen-type Gas Leak Detector: Detect the presence of all kinds of combustible gas and react very quickly. Compact and lightweight, easy to carry.2. Sensitivity Selection: High and low sensitivity are switchable for different scenarios.3. Auto Power Off: No operation, no alarm signal, automatic shutdown after about 5 minutes.4. Audible and Visual Alarm: Send out an audible and visual alarm if combustible gas is detected.5. Easy to Read: LCD display with green backlight ensures clear visibility even in the dim light.Note:1.Turn on the instrument in a clean air environment and wait for the warm-up to complete.2. Always check the function of the gas detector before using it to ensure that it is normal.3.Ensure that the gas concentration does not exceed 20% LFL ( Lower flammability limit ).4. Due to manual measurement, the size may be slightly different. Thank you for your understanding. Model: HT60ShellMaterial: ABSDisplay: LCDColor: Black & RedSensor: Gas-sensitive semi-conductorDetection Range: 50~1000ppm (methane)Response Sensitivity: 500PPM: Approx. 2secAlarm Mode: visible and audibleOperating Conditions: 0~50C / 20~80% RHStorage Conditions: -10~60C / 20~80% RHBatteries: 2 x 1.5V AAA alkaline battery ( not included )Item Size: 17*2.8*2.3cm / 6.69*1.10*0.91inNet Weight: 35g / 1.23ozPacking Size: 17.5*4.5*3cm / 6.89*1.77*1.18inPacking Weight: 55g / 1.94ozPackage List:1 * Combustible Gas Detector1 * Manual ( English )