Features:
High technology design, it can be used to detect various flammable gas, such as natural gas, methane, ethane, propane, butane, alcohol, ammonia, hydrogen, gasoline vapor, sulfide, organic solvent steam, smog, lacquer thinner, naphtha, volatile industrial solvent, etc.
Low battery indication.
It is suitable for use in industry and household, such as factories and kitchens, etc.
Specifications:
Resolution: 50ppm (methane)
Alarm range: 10%-40% LEL
Response time: <2 seconds (40% LEL)
Operating temperature: 0 to 50 Celsius degree
Operating humidity: 10% to 90%RH (non condensing)
Power supplied by: 4 * 1.5V AAA batteries (not included)
Certificate: EMC
Product size: approx. 16 * 6.8 * 4.5cm/ 6.3 * 2.6 * 1.7in
Product weight: 255g/ 9oz (not including battery)
Package size: 25 * 13.7 * 5.5cm/ 9.8 * 5.4 * 2.1in
Package weight: 446g/ 15.7oz (not including battery)

Packing list:
1 * Flammable gas detector
1 * Storage bag
1 * User manual