The FY8830 Gas Leak Detector is a reliable tool for detecting natural gas, LPG, and other combustible gases. Its high-precision semiconductor sensor ensures quick, accurate readings, while audible and visual alarms help prevent accidents. Ideal for gas pipelines, stoves, and household safety monitoring. Main Features Detects combustible gases including methane, propane, butane, hydrogen, carbon monoxide, and more. Audible and visual alarm alerts you instantly when gas is detected. High-sensitivity sensor with adjustable detection range for low/high sensitivity. Fast response: detects ≤500 PPM in ~5 seconds and >500 PPM in ~2 seconds. Powered by 2 × 1.5V AAA batteries (not included). Specifications Detection Range: 50–1000 PPM (methane) Response Sensitivity: Preheating Time: ~30 seconds Response Time: ≤500 PPM: 5 s / >500 PPM: 2 s Alarm Method: LED light + buzzer Power Supply: 2 × 1.5V AAA batteries (not included) Sensor: Gas-sensitive semiconductor