Features:  Multiple function-Real time testing the concentration of carbon dioxide, temperature and humidity.  Selected quality sensor-High accuracy, anti-interference, with quickly reaction speed.  Equipped with large digital display with backlight-You can see the remaining electric quantity, carbon dioxide value, temperature and humidity data clearly.  Color circle-The color circle will changed according to the detection data.  Application area-Agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, etc.     Specifications:  - Material: ABS;  - Display: LCD screen + backlight;  - Color: Black, White (optional);  - Battery: 1x rechargeable battery, 3.7V, 1200mAh (included);  - Applicable temperature: -1℃ to 70 ℃;  - Applicable humidity: 10-70%RH;  - Monitoring float: 20%-50%;  - Charging standard: 5V-1A;  - Co2 Measurement range: 400-5000PM;  - Standby time: 300-420 minutes;  - Item size: 7x4x9cm/2.8x1.6x3.5'';  - Package size: 11.2x4.5x11.5cm/4.4x1.8x4.5''.     Packing Included:  1 x Carbon Dioxide Detector;  1 x USB Cable;  1 x Guideline.