Features: *Brand new and high quality *Made of high quality material, strong and durable *Ultra-high-definition color screen, equipped with high-precision sensors, more accurate real-time monitoring of PM1.0, PM2.5, and PM10, making reading more intuitive and convenient. *Green: safe, no alarm sound; *Yellow: When the value reaches 36ug/m3, the beeping sound cycle alarm will start, once every 10 minutes. *Easy to carry: The portable air quality detector has a lightweight structure and integrates beauty and technology. It is easy to transport and equipped with an anti-lost sling to keep you informed of changes in the surrounding environment. *Air quality testing: Create a safe environment for you and your family. It is convenient to carry large-capacity batteries to meet the testing requirements of new environments. Specification: *Material: ABS *Battery capacity: 1000mA *Size: 85*51*17mm (mm) *Product name: PM2.5 air quality detector *Detection range: 0-1000ug/m3 *Measurement accuracy: ±1ug/m³ *Operating voltage: 3.7V *Preheating time: 35s *Data refresh frequency: 2s *Operating humidity: 0~95%RH *Operating temperature: -20-60℃ *Charging method: Type-c interface *Color: black, white (optional) Package includes: 1X testing equipment 1X Instructions for use Notes: 1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement. Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you. Air Quality Detector Dust Detector Pm2.5 Pm10 Pm1.0 Temp&Humidity Detector