"Natural Gas Detection Pen Type Leak Detector Gas Meter Analyzer Household Visual Sound Alarm 87HA Natural Gas Detection Pen Type Leak Detector Combustible Gas Detector Analyzer Household Monitor sound and light alarm HT61 gas leak detector can detect various combustible gases such as methane, propane and natural gas. The Mini Gas Detector checks your home's appliances and plumbing to determine the exact source of potential gas leaks. Features: < p> < p>Gas Leak Detector: Detects the presence of all types of flammable gases and reacts quickly. Audio Alert: Sounds and visual alerts if gas is detected. Practical Features : High sensitivity and bass can be switched for different scenarios. Easy to read: LCD display with green backlight ensures clear visibility even in low light conditions. METER Portable: Weighing only 1.69 ounces and measuring 7 x 1.2 x 1.2 inches, it is small and lightweight for easy portability. Easy to use: No complicated instructions, very simple to use. Turn on auto power off: It will take about 10 minutes for automatic shutdown after power-on if there is no operation and measurement signal. BATTERY POWERED: Powered by 2 1.5V AAA batteries. Parameters : Sensor: Gas Sensing Semiconductor Response Range: &gt; 50 ppm (Methane) Preheat Time: Approx. 30 seconds < p>Reaction time: about 5s (500PPM) Alarm mode: sound and light alarm Working conditions: 0~50 / 20 ~80%RH Storage Condition: -10~60 / 20~80%RH Characteristics: < /p> Material: ABS Color: Black & Red Power: 2 pcs, 1.5V, AAA batteries (batteries not included) Product size: 18 *3*3cm/7.08*1.18*1.18 in Item weight: 48g / 1.69oz Package contains: 1 * Combustible Gas Detector"