Air Quality Sensor High Sensitivity Particle Concentration Laser Sensor for Carbon Dioxide Temperature Humidity Item Type: Sensor Module Model: M702B 485 Output Mode: 485 protocol CO2 Measurement Range: 400ppm-5000ppm CO2 Measurement Accuracy: ±25% CO2 Measurement Resolution: 1ppm CH20 Measurement Range: 0ug/m³-1000ug/m³ CH20 Measurement Accuracy: ±25% CH20 Measurement Resolution: 1ug/m³ TVOC Measurement Range: 0ug/m3-2000ug/m³ TVOC Measurement Accuracy: ±25% TVOC Measurement Resolution: 1ug/m³ PM2.5 Measurement Range: 0ug/m3-999ug/m³ PM2.5 Measurement Accuracy: ±10% PM2.5 Measurement Resolution: 1ug/m³ PM10 Measurement Range: 0ug/m3-1000ug/m³ PM10 Measurement Accuracy: ±10% PM10 Measurement Resolution: 1ug/m³ Temperature Measurement Range: -40℃-100℃ Temperature Measurement Accuracy: ±0.3℃ Temperature Measurement Resolution: 0.01℃ Humidity Measurement Range: 0-100% Humidity Measurement Accuracy: ±3%RH Humidity Measurement Resolution: 0.04% Physical Interface: XH2.54 female chassis Working Current: ≤80mA Working Temperature:0℃-50℃ Working Humidity: ≤95%RH Preheating Time: 2 minutes (only CO2, CH20 and TVOC need to be preheated, other parameters can be displayed by power on) Service life: 5 years (in air)