POWERFUL FEATURES & HIGH ACCURACY SENSORS A handheld carbon monoxide detector is a device that detects the presence of CO gas in an area, usually as part of a safety system. And with a wide measurement range, it can continuously monitor the CO concentration and ambient temperature in the surrounding environment. The portable CO detector uses a high precision sensor with a wide measurement range. CO: 0~1000PPM (accuracy 1PPM), when the CO gas concentration reaches the alarm level (you can set the alarm value, preset value 24PPM), the sound and light alarm will work. Ambient temperature: 0~50? / 32~122?. ERGONOMIC DESIGN & BATTERY POWERED The CO gas tester is small, lightweight and professionally designed to fit comfortably in the palm of your hand and can be easily held with one hand. In addition, we have uniquely designed a back clip for the CO detector, which is easy to carry when you are working outside. The carbon monoxide detector is powered by 3 AAA batteries. When the battery is low, BIBI sound will appear when the CO detector is turned on, but no fonts will appear on the display screen. In this case, 3 new 1.5V AAA alkaline batteries are needed. Name: Carbon Monoxide Detector Material: ABS Color: Orange Sensor Type: Stabilized 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: