Feature: 1. Excellent Sensor Chip: The detector adopts industrial grade sensor chip, has temperature and humidity detection function, can accurately detect indoor temperature and humidity 2. Intelligent Backlit Function: This detector has intelligent brightness display, the screen brightness will automatically change the brightness with the passage of time, which is in high brightness mode from 7:00 to 22:00 in the morning to make the sight clearer, and becomes normal brightness mode from 22:00 to 7:00 in the evening to protect eyes from direct sunlight 3. Multi Function: This detector can accurately detect temperature and humidity, formaldehyde, PM2.5, TVOC, with timetable, five displays on one screen, more intuitive data 4. Real Time and High Accuracy: This detector display temperature and humidity in real time, the measuring accuracy up to 0.1 degrees, the danger can be seen at a glance 5. Application: This detector is made of durable high quality shell with long service life, suitable for laboratories, factories, workshops, warehouses, farms, etc., is a good companion for household and industrial applications Specification: Item Type: Air Quality Monitor((External standard probe) Material: Plastic Power Supply Voltage: USB 5V Measuring Range: -40 to 80℃ 0-99.9%RH Measurement Accuracy: ±0.5℃ ±3%RH Resolution: 0.1℃ 0.1%RH Temperature Alarm Upper Limit Value: (Low temperature alarm value +1) ~120℃ Temperature Alarm Lower Limit Value: -40℃ (high temperature alarm value -1) ℃ Humidity Alarm Upper Limit Value:(Low temperature alarm value +1) ~99.9%RH Humidity Alarm Upper Limit Value: 1~(high temperature alarm value -1) %RH Formaldehyde Upper Limit Setting: (Low formaldehyde alarm value +1) ~9.99gm/m³ PM2.5 Upper Limit Setting: (Low PM2.5 alarm value +1) ~999ug/m³ TVOC Upper Limit Setting: (Low TVOC alarm value +1) ~99.9gm/m³ Scope of Application: Laboratories, factories, workshops, warehouses, farms, etc. Plug Type: US plug 100-240V. Package List: 1 x Air Quality Monitor1 x Charging Head1 x Charging Cable1 x Anchor