WINTACT WT8825 Carbon Monoxide Detector Independent CO Gas Sensor Warning-up High Sensitive Poisoning Alarm Detector

feature 1.HOLD data retention 2.MAX maximum / MIN minimum 3.UN VOL, UNIT switch unit in PPM, (MG / M ^ 3) 4. Alarm settings 5. Calibration 6. On/Off (timed shutdown) Specification 1. Measurement range: 0~1000ppm; 0~0.1%VOL; 0~0.8%LEL; 0~1250mg / M ^ 3 2. Maximum overload: 2000PPM 3. Response time: <30 seconds 4. Ambient temperature: 0~50°C (32~122°F) 5. Use ambient humidity: 15~90% RH Package Included 1 x carbon monoxide detector (without battery) 1 x manual