The combustible gas detector can detect gases like EX in a range of 0-100% LEL with a discrimination rate of 0.01% LEL using catalytic combustion. It has a 2-3 year sensor life, 500ml/min pump suction detection method, 2.4-inch color screen, IP65 rating, and dimensions of 160x70x28mm. It provides sound, light, and vibration alarms and has a 4500mAh polymer battery with overcharge, overdischarge, and temperature protections.