The detector is a superior performance of composite gas detection alarm, which can simultaneously be gas, oxygen, carbon monoxide, hydrogen sulfide, or other additional testing, safety testing suitable for a variety of industrial hazardous and confined space entry ago. l The instrument has a large LCD backlit display, with sound, dichroism alarm and vibrating alert to ensure that in a very hostile work environment can also detect dangerous gases and promptly prevent the operator prompts. Detector shell is made of high-strength engineering materials, composite elastic rubber materials from refined, high strength, feel good, and waterproof, dust-proof, explosion-proof. l Features: 1, imported sensors, reliable performance; 2, using high-strength ABS plastic, composite elastic rubber material shell; 3, sound, vibration, and red and yellow colored light alarm; 4, large-screen digital, character display, instantaneous value, peak, average display; 5, low maintenance costs; 6, can support any one or four-gas detection. l Technical parameters Detection of gas Range Accuracy sensor type oxygen sensor life (O2) 0-30% Vol ± 1.5% (FS) 24 months electrochemically gas (EX) 0-100% LEL <± 5% (FS) 36 个May catalytic combustion of carbon monoxide (CO) 0-999ppm <± 5% (FS) 24 months electrochemical hydrogen sulfide (H2S) 0-100.0ppm <± 5% (FS) 24 months electrochemical cell: 3.6V Li-ion rechargeable battery; Display: large-screen LCD; alarm: sound, vibration, and red and yellow color light alarm; Direct reading: instantaneous, peak, battery voltage, TWA, STEL; proof mark: Exibd II CT3; Protection class: IP45; Operating Temperature : -10∽40 ℃; Humidity: 5-90% RH; Size: 130mm (length) × 70mm (width) × 32mm (thickness); Weight: 210g.