High Quality! This product needs to be used with a ZigBee 3.0 gateway. The smart air box is an intelligent home device for remote monitoring of air environment. It can detect formaldehyde, VOCs, CO2, temperature, and humidityfive types of environmental parameters. When environmental levels exceed thresholds, it can automatically trigger connected smart home devices such as air conditioners, fans, humidifiers, and air purifiers to optimize indoor air quality. Detection range: - Formaldehyde: 010.0 mg/m - VOC: 099.9 ppm - Carbon dioxide: 01000 ppm - Temperature: 060 C - Humidity: 095 %RH After pairing with the app, it can be linked with smart devices. For example: - When formaldehyde or VOC levels are high, the smart air purifier turns on automatically. - When CO2 levels are high, the smart fan turns on automatically. - When temperature is abnormal, the air conditioner adjusts automatically. - When humidity is too low or too high, the smart humidifier turns on or off automatically. - When any parameter exceeds the standard, an alert message is sent. (Note: Smart linkage functions require compatible smart home products.) Specifications: - Working temperature: -20C to 85C - Working current: 10496 mA - Power supply: USB 5V/1A - Rated working voltage: 4.812V - Communication protocol: ZigBee 3.0 - Size: 90 x 90 x 35 mm - Color: White - Material: ABS Package Contents: - 1 x Smart Air Box - 1 x English Manual - 1 x Card Pin - 1 x USB Power Cable Note: Light reflection and display differences may cause slight variations between the product color in images and the actual item. Measurement error is permitted within +/- 13 cm.