1. Compact and convenient, can work at any time2. Can detect multiple combustible gases to eliminate potential safety hazards3. 3-color indicator design. Simple and easy to understand4. Can carry out air wet temperature test, high precision sensing5. Digital display design, replaceable battery, longer service lifeParameters:1. Detecting gas: hydrogen, carbon monoxide, methane, ethane, propane, butane, ethylene, propylene, butylene, acetylene, propyne, butyne, hydrogen sulfide, phosphine2. Detection range: 300-10000ppm (reference medium for methane)3. Sensitivity: 50ppm4. Response time: 2 seconds5. Warm-up time: 30 seconds6. Alarm mode: analog strip, LED lights, beeps7. Range: humidity measurement: 0-100% RH; temperature measurement: -10-60 degrees celsius / 14-140 degrees fahrenheit8. Resolution: humidity measurement: 1 percent RH; temperature measurement: 0.1 degrees celsius / 0.2 degrees fahrenheit9. Accuracy: humidity measurement: about 5 percent RH; temperature measurement: about 0.1 degrees celsius / 0.2 degrees fahrenheit10. Automatic shutdown: about 5 minutes11. Power supply: 2 x 1.5V AAA batteries (not included in shipment)12. Size: 170 x 28 x 31mm13. Weight: 67gPacking list:- Main unit x 1- Storage bag x 1- Instruction manual x 1Specification: Package Weight One Package Weight 0.17kgs / 0.38lb One Package Size 22cm * 8cm * 5cm / 8.66inch * 3.15inch * 1.97inch Qty per Carton 60 Carton Weight 11.20kgs / 24.69lb Carton Size 48cm * 37cm * 34cm / 18.9inch * 14.57inch * 13.39inch Loading Container 20GP: 441 cartons * 60 pcs = 26460 pcs40HQ: 1025 cartons * 60 pcs = 61500 pcs