Honeywell Indoor Air Detector-IAQ Air Detective. The product is equipped with independent sensors, which can detect formaldehyde, PM2.5, temperature and humidity indicators in the air in real time, and can realize remote control of mobile phone APP to help users take timely countermeasures. It can detect and monitor the air quality of new houses, new cars, newly purchased furniture, offices, after heating and other places, and is suitable for the elderly, children, pregnant women, pregnant women and other people. The product has built-in 2600 mA lithium battery and has long endurance.