Features MULTI FUNCTIONAL: This air quality monitor provides measurements for temperature (℉ ℃ switchable), humidity, PM1.0, PM2.5, PM10, and more, highly practical. HIGH ACCURACY: With advanced sensing technology, this detector ensures highly sensitive and precise measurements, giving users peace of mind regarding air quality. 2.8 INCH LCD DISPLAY: The multi color screen utilizes all angle viewing technology, allowing clear visibility of readings from any angle. USER FRIENDLY: With only five buttons, this air quality tester is easy to use. The button operation is simple and intuitive, taking only five buttons to complete all functions. POWERFUL BATTERY LIFE: This detector is plug and charge with a MicroB USB interface, built in 2000mAh large battery, providing long lasting battery life for continuous monitoring. Specification: Item Type: Air Quality Monitor Material: ABS Sampling Time: 1.5 Seconds Temperature Detection Range: -10℃ to 50℃; 14℉ to 122℉ Humidity Detection Range: 20% to 85% PM2.5 1.0 10 Detection Range: 0-999ug/m³ Power Supply: 1 x 2000mAh Rechargeable Lithium Battery (Built in) Package List:1 x Air Quality Monitor1 x USB Cable1 x Instructions Package List 1 x Air Quality Monitor 1 x USB Cable 1 x Instructions