Natural Gas Detector Pen Type Leak Detector Combustible Gas Meter Analyzer Monitor For Home Visible Audible Alarm The HT61 gas leak detector can detect all types of combustible gas like methane, propane, natural gas, etc. As the concentration goes up, the audible alarm beep more frequently and the scale add up. Check appliances and piping in your house to pinpoint the precise source of a potential gas leak with the practical mini gas detector. Features: GAS LEAK DETECTOR: Detect the presence of all kinds of combustible gas and react very quickly. AUDIBLE ALARM: Send out an audible and visual alarm if any gas is detected. PRACTICAL FUNCTIONS: High and low sensitivity are switchable for different scenarios. EASY TO READ: LCD display with green backlight ensures clear visibility even in the dim light. Portable METER: Weighing only 1.69 ounces, measuring 7 by 1.2 by 1.2 inches, compact and lightweight, easy to carry around. EASY TO USE: Without complicated instructions, extremely simple to use. AUTO POWER OFF: Auto power off after about 10 minutes if there are no operation and measurement signal. BATTERY POWERED: Powered by 2 pieces 1.5V AAA batteries. Parameters: Sensor: Gas-sensitive semi-conductor Reaction Range: >50PPM (methane) Warm-Up Time: Approx. 30 sec Reactions Time: Approx. 5 sec (500PPM) Alarm Mode: Visible and audible Operating Conditions: 0~50 / 20~80%RH Storage Conditions: -10~60 / 20~80%RH Specifications: Material: ABS Color: Black and Red Power: 2pcs, 1.5V, AAA battery (Batteries Not Included) Item Size: 18*3*3cm / 7.08*1.18*1.18in Item Weight: 48g / 1.69oz Packing included: 1 * Combustible Gas Detector