WH0290 Air Quality Monitor, WH41 PM2.5 Sensor and Digital LCD Display

❥ Know Your Air: this air quality monitor provids accurate PM2.5 information(with high quality Honeywell HPM Series Particle Sensor) in your home/office and allows you to take timely measures to keep the air quality within safe levels ❥ 3-in-1 Multifunctional Tester: displays PM2.5/AQI current and max value for 1h/24h/since last reset; also measuring the indoor temperature(°C/°F switchable) and relative humidity； Note: No outdoor temperature and humidity; will not detect mold ❥ 6 Grades Air Quality Levels Indicator: Good, Moderate, Poor, Unhealthy, Severe and Hazardous, showing you instantly what your air quality is like ❥ Indoor & Outdoor Air Quality Detector: suitable to use at home, office, car and other environmental testing; monitor the air quality anytime anywhere to be away from harmful of PM2.5 ❥ Rechargeable & Wireless: the PM2.5 sensor is powered by 2 rechargeable batteries and with built in solar panel as backup power(all included); also with battery power condition