Specifications:<br>Model: D9-B / D9-H (Optional)<br>Material: ABS<br>Color: White<br>Measure Medium:<br>D9-B：PM2.5 & TVOC&PM1.0&PM10&temperature & humidity.<br>PM2.5 Test Range: 0~6000g/m⊃3;;<br>Temperature Test Range: -9~55℃<br>Humidity Test Range: 0~100%<br>TVOC Test Range: 0.000~2.000mg/m⊃3; (D9-B, D9-H)<br>HCHO Test Range: 0.000~2.500 mg/m⊃3; ( D9-H)<br>CO2 Test Range: 400~4000ppm (D9-H)<br>Detection Technique: Semiconductor Sensing Technology<br>Working Temperature: -9℃~55℃<br>Relative Humidity: <80%HR<br>Battery: 1 * 3.7V 3000mA Li-ion Battery (Built-in)<br>Input: 5V, 1A<br>Date & Time Setting: Users can set the current date and time<br>Adjustable Automatic Shutdown Time Setting Range: 10 Minutes - 18 Hours<br>Adjustable Backlight Brightness Setting: 10% - 100%<br>Historical Data Settings: Users can view historical data saved by the system<br>Maximum Storage Management Space: 65,534pcs<br>可调定时存储设置：10 分钟 - 18 小时<br>可调定时屏幕切换设置 S：10 秒 - 600 秒<br>商品重量：232g<br>包装清单：<br>1 * 空气质量检测器<br>1 * USB 电缆<br>1 * 用户手册