IP65 High quality electrochemical sensor: 4 Gas Monitor,which is used in a variety area such as:explosive-proof, waterproof, and dust-proof environment etc. Engineering plastic, good shock resistance, high strength, high-grade exterior, dustproof, waterproof and explosion-proof, Detection error better than less than equal ±5% F.S. and response time: T Less than 30s 4 Gas Detector with human voice, Adjustable audio, visual, and vibration alarms alert. easy-to-read number shown on the display,can detect hydrogen leack (H2S), carbon monoxide leak (CO),oxygen leak (O2),Combustible The gas mo has a stainless steel clip on the back side, which can be easily clipped on your clothes, pocket or belt to keep you safety and comfortable working in confined space, 1800 mAh fast charging lithium battery. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Voltage:AC110V Colour:B:Black Material:Plastic Package Contents: 1set * oxygen detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.