Usage Tips:Features: Portable detector for detecting carbon monoxide(CO) gas. LCD display and / switch. Can continuously monitor the CO gas concentration in the surrounding environment. Sound alarm works when CO gas concentration reaches the level of the alarm. Compact size, light weight, easy to carry and operate.Professional and accurate measurement. Can set concentration of alarm value.Auto power off in 10 minutes without any operation. The Carbon monoxide gas detector is a portable detector for detecting carbon monoxide (CO) gas. It can continuously monitor the CO gas concentration in the surrounding environment, once the gas concentration reaches the level of the alarm, the alarm will sound, light. High precision portable CO gas tester with compact size and light weight is easy to carry and operate. It is widely used in petroleum, chemical, coal, metallurgy, paper, fire, municipal, telecommunications, food, textile and other industries. Specifications: Sensor Type: Stablized Electrochemical Gas Specific (CO) Detection Gas: Carbon Monoxide (CO) Temperature Measurement: Ambient Temperature Display Unit: CO: ppm, Temperature: / Measurement Range: CO: 0~1000PPM, Temperature: 0~50 / 32~122 Resolution: CO: 1PPM, Temperature: 0.1 / 0.1 Accuracy: CO: 5% or 10PPM, Temperature: 1.5 Response Time: Less than60s Alarm: Sound & Light Alarm Alarm Point: 24PPM Preset (Adjustable) Battery Type: 3xAAA 1.5V Alkaline Batteries (NOT Included) Operating Temperature: 0~50, Relative Humidity 1%~99% Storage Temperature: -30~60, Relative Humidity: 1%~99% note:Products may be constantly updated, and the color and appearance may change. The actual product may be slightly different or the color difference does not affect use. If you have requirements for color or appearance, please consider carefully before placing an order. Material: pla colour: Yellow Package Contents: 1 x Carbon Monoxide Meter(without battery) 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.