6 in 1 Air Quality Monitor Portable Temperature Humidity Detector for Home Office School Item Type: Air Quality Monitor Material: ABS Model: HT 9600 PM2.5 Sensor Principle: Photoelectric type Sampling Method: Pump suction type Light Source: Laser diode Particle Size Channel: 0.3μm 2.5μm 10μm Flow Rate: 1L per min Measuring Range: 0 to 1000μg per m3 Resolution: 1μg Detection Method: Manual Sampling Time: 120s Typical Accuracy: <20% Concentration Unit: Pcs./L, μg/m3 Temperature Range: 0 to 50℃ Typical Accuracy: ±1℃ Humidity Range: 0 to 99% RH Typical Accuracy: ±2% RH Working Temperature: -10 to 50℃ Working Humidity: 10 to 90% RH Stored Data: 2005 sets Automatic Shutdown: 2 minutes (no key operation) Power Supply: 1 x 3.7V18500 (1400mAH) (shipped with built in battery) Starting Current: 120mA Working Current: 280mA Display Mode: LCD numerical display, color backlight Screen Size: 2.8 inches Screen Resolution: 320 x 240