Feature: 1. Multi Function: The detector adopts an LED digital display, which clearly displays multiple detections of carbon dioxide, temperature and humidity. 2. Automatic Detection: Long press the power button for 3 seconds to turn on or off, and the surrounding environment can be automatically detected after turning on. 3. Phone Monitoring: Support for Tuya APP monitoring, real time display of carbon dioxide concentration value per cubic meter, flashing light to display the level. 4. 4 Indicator Light: LED digital display and four indicating status colors, high definition and clear to see, microprocessor, fast response, low power consumption. 5. Wide Usage: CO2 meter is suitable for use in various scenarios such as agricultural planting, greenhouse planting, production warehouses and home. Specification: Item Type: Air Quality Monitor Material: ABS Usage: Suitable for agricultural planting, greenhouse planting, production warehouses, material processing experiments, households and other scenarios Applicable APP: For Tuya Detection Gas: CO2 Detection Temperature: 0-+50 Detection Humidity: 0-85%RH Measurement Technique: Non-Dispersive Infrared Absorption (NDIR) Measuring Range: 400-5000PPM Accuracy Tolerance: (50ppm+5%)/0.3/2% Display Mode: Digital Display Fixing Method: Put it on the table, Wall Hanging Power Supply Mode: USB Power Supply, 18650 Lithium Battery x 1, 3 x AA Battery Power Supply Response Time: <120s Communication Method: 2.4g Wifi Standby Time: About 10 Hours Size: Approx. 100x40mm / 3.94x1.57in Working Temperature: -10-+50 Storage Temperature: -20-+55 Fresh Air: Green Light 400-999PPM Good Air: Yellow Light 1000-1999PPM Mild Hypoxia: Orange Light 2000-3999PPM Severe Hypoxia: Red Light 4000-4999PPM Buzzer Prompt: >2000PPM Whether To Support Outdoor Measurement: Support Package List: 1 x Air Quality Monitor 1 x Charging Line 1 x Manual How to use: 1. Download for Tuya Smart APP through the app store or browser; 2. Turn on the mobile phone WiFi and Bluetooth and connect to the 2.4G router; 3. Power on the device. After the startup is complete (about a few seconds), the device will enter the distribution network mode 4. Open the for Tuya Smart APP, click the + sign (for Tuya Smart APP version V3.33.0, different versions may be different), and automatically scan the nearby devices (this version will automatically discover nearby devices when adding operations); 5. Select the scanned device to add. 6. Enter the connected WiFi account and password, and click Next. 7. Start the network configuration. If the network configuration is successful, you can see a tick at the back and click Next. 8. You can rename the device after adding it successfully. 9. Press and hold the left WiFi button for 3 seconds to restore the factory settings (reset). 10.