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SQECH 4-in-1 Carbon Monoxide Detectors,Air Quality Detector Measures CO2, Carbon Monoxide, Temperature and Humidity,CO2 Detector with Alarm,for Home,RV,Camping,Travel&Outdoor

The 4-in-1 air quality detector can detect CO concentration range is 0~500PPM,CO2 concentration range is 400~5000PPM [±(50PPM + 5%)], and temperature range is 32~122°F (±2.7°F) / 0~50°C (±1.5°C), humidity range is 20~80%RH.
CO default alarm range: 150~500PPM, CO2 default alarm range: 1500~5000PPM.
The rechargeable multifunctional air quality detector has a built-in 2000mAh battery, which can last for up to 60h after being fully charged, and the gas detector is equipped with a Type-C cable, which can fully meet your needs for its working time .
The portable carbon monoxide detector has a 3.7" high-definition color LCD display screen that is easy to read even at night.
The gas detector adopts wall-mounted and vertical designs, and the bottom can be placed freely, so you can easily place the air quality detector in indoor places such as living rooms, bedrooms, kitchens, etc. to measure CO,CO2, temperature and humidity.