①. Features: 1. Combustible Gas Leak Detector: GN805 is suitable for acetone, acetylene, alcohol, ammonia, benzene, ethanol, epoxy acetylene, gasoline, hexane, hydrogen, methane, liquefied petroleum gas, natural gas, paint thinner, propane, solvents, etc. It assists you in protecting the safety of your home and property anytime, anywhere. 2. Visual & Audio Alarm: The gas leak finder has a red LED light and buzzer. When it senses combustible gas, the red LED light will flash and the buzzer will sound the alarm. When the sensed concentration of combustible gas is higher, the red light will flash and the sound alarm will be more urgent. 3. Adjustable Sensitivity: Users can adjust the sensitivity of the detector according to different environments and needs to ensure that it can adapt to various complex gas environments. 4. Large LCD Display: Large screen with backlit, it can show combustible gas concentration, temperature (°C/°F), and low power prompt. To save power, the detector will automatically shut down and the screen goes out when it has not operated or detected flammable gas for 4 minutes. 5. Compact & Portable: The pen-type design is lightweight and compact, making it easy to fit into your pocket or toolbox for convenient carrying. ②. Specification: Model: GN805; Material: ABS; Sensor: Gas sensitive semiconductor; Response Range: 50~1000ppm (methane); Sensitivity: Approx. < 50ppm; Adjustable Sensitivity: S key toggle; Warm-up Time: 30 seconds; Response Time: ≤500ppm: about 5 seconds, > 500ppm: about 2 seconds; Alarm Method: Sound and indicator light; Use Environment: 0℃~50℃ / 20%~80%RH; Storage Conditions: -10℃~60℃ / 20%~80%RH; Use Battery: 2 * 1.5V AAA batteries (Not included); Automatic Shutdown: No operation within 4 minutes, automatic shutdown; Gas Detection (sector list): acetone, acetylene, alcohol, ammonia, benzene, ethanol, epoxy acetylene, gasoline, hexane, hydrogen, methane, LPG, natural gas, paint thinner, propane, solvents, etc.; Item Size: 180.8 * 26.1 * 29.2mm / 7.12 * 1.02 * 1.15in; Item Weight: 57.7g / 2.03oz; Package Weight: 78g / 2.75oz; Package Size: 18.4 * 3.5 * 3cm / 7.24 * 1.37 * 1.18in. ③. Package List: 1 * Combustible Gas Detector, 1 * Packaging Box, 1 * User Manual (English).