【4 Gas Monitor Multi Gas Detector】The 4 gas Monitor measures gases such as carbon monoxide (CO), oxygen (O2), hydrogen sulfide (H2S) and combustibles (EX). Before the 4 gas monitor multi gas detector is released, it has been inspected and certified as qualified, comes with the Calibration Certificate in the box, with an initial password of "4321", open and use directly. An essential tool for those in the trade that essential for personal safety

【Functional and Easy to Use】Manual is easy to read and understand, the LCD large screen that displays gas concentrations. The 4 gas monitor multi gas detector menu has the Channel Setting, Alarm Setting, Calibration, Time Settings（Set the local time yourself） and Device Information etc. You can also view records and curve for that gas type, such as O2

【Rechargeable and Long Lasting】3000mAh Lithium battery that standby time>8h, an exceptional battery life allows the device to continue to function normally even after lengthy hours of usage without compromising its functionality. The package includes the 4 gas monitor multi gas detector, the Calibration Cap, the Calibration Certificate, Hose, USB-C Cable and Charger, if you're often working in areas where dangerous gasses may be present then it's important to have the gas detector to warn you

【Excellent Sensitivity】The 4 gas monitor multi gas detector that response time< 30s, when the air quality isn't safe, it would warn the user through audible, visual and vibration alarms, you can also choose to turn off the sound when the alarm goes off. Portable multi-gas monitor are vital in protecting you from the hazards of toxic and combustible gases in confined spaces and dangerous work environments

【Easy to Carry and Sturdy】Incredibly sturdy back clip to carry, the shell of 4 gas monitor multi gas detector is made of high-strength engineering plastics and composite anti-slip rubber, with high strength and good feel, and the gas meter is also waterproof, dust-proof and explosion-proof. Giving you total peace of mind wherever you're working

【Great Value and Widely Used】The 4 gas monitor multi gas detector is widely used in industries such as petroleum, chemical, metallurgy, refining, gas transportation and distribution, bio-medicine, agriculture, etc. 1 YEAR quality guarantee, if you have any question, please feel free to contact us