2.8 inch LCD display, power, CO2 value, HCHO value, TVOC value, temperature and humidity are clear at a glance. It adopts high-precision semiconductor sensor, real-time detection, automatic data refresh, machine can be used for multiple purposes. Several ventilation holes are reserved on the shell, which not only accelerates the convection between the air and the machine, thus realizing effective detection, but also provides good heat dissipation effect. This is a high-quality air quality detector, small in size, light in weight and easy to carry. Widely used: agricultural planting, greenhouse vegetables, production warehouse, material processing, home indoor, business office, etc. Product name: air detector Material: ABS color: Black Detection technology:TVOC detection technology Display screen: 2.8 inch TFT LCD screen with backlight Standby time: about 300-420 minutes, Battery capacity 1200 CO2 measurement range: 400ppm-5000ppm Sensor: TVOC sensor Charging standard: 5V-1A Temperature measurement range: 1 to 70 Product size: 107 x 92 x 46mm Package Contents: 1 x Air Detector 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.