1. Widely used in gas pipeline leak detection, household gas prevention, gold mining, tunnel mine operations, oil and gas extraction, hazardous goods storage warehouses, etc. 2. It is convenient for users to safely detect various combustible gases, such as: methane, carbon monoxide, gasoline, ethylene oxide, etc. 3. Range: 0-1000PPM 4. Accuracy: less than or equal to 10% FS (methane) 5. Sensitivity: less than 50PPM (methane) 6. Response time: less than 2s 7. Warm-up time: about 30s 8. Display: LCD 9. Supports automatic zero return, automatic shutdown, and battery low voltage indication 10. Power supply method: AAA battery x2 (not included) 11. Size: 180x32x31mmSpecification: General Certificate FCC, EMC Package Weight One Package Weight 0.11kgs / 0.25lb One Package Size 21.4cm * 5.3cm * 4.3cm / 8.43inch * 2.09inch * 1.69inch Qty per Carton 80 Carton Weight 9.50kgs / 20.94lb Carton Size 45cm * 29cm * 36cm / 17.72inch * 11.42inch * 14.17inch Loading Container 20GP: 567 cartons * 80 pcs = 45360 pcs40HQ: 1317 cartons * 80 pcs = 105360 pcs