Temtop S1 Air Quality Monitor

Temtop S1 Indoor Air Quality Monitor AQI PM2.5 Temperature Humidity Detector for Home, Office or School, Air Quality Tester 4 More Home Monitoring, Battery Powered, Magnetic Suction

If monitoring temperature and humidity is your priority, then Smart Mode and Eco-Mode are recommended, and the battery will stand by more than 11 days, if monitoring PM2.5 and AQI is your priority, Real-time Mode and Interval Mode are recommended, the battery will stand by only up to 4 days.