New Generation HT66 Handheld Gas Leak Detector Analyzer 50-1000PPM Household Combustible Flammable Natural Gas Tester PPM Meter            Description     1. Combustible gases, such as methane and natural gas, can be detected. 2. It uses high sensitivity gas sensitive semiconductor and high performance microprocessor. 3. Low power consumption. Long life. Sound and light alarm. 4. Portable, high quality, fashion, constant temperature detection technology using sensitive sensor. 5. Prevent problems before they occur and detect leaks quickly. 6. It is suitable for kitchen gas, canned gas, natural gas, gas pipe network etc.            Specification     Sensor: Gas-sensitive semi-conductor Reaction range: 50~1000PPM (methane) Reactions Sensitivity: Approx.500PPM: Approx. 2sec Alarm mode: Visible and audible  Operating conditions: O to 50°C / 20 to 80%RH Storage conditions: -10 to 60°C / 20...80% RH Batteries:2x1.5V AAA Alkaline battery(not include)            Package include     1 * Combustible Gas Detector(without battery) 1*User Manual