This product must be used with for ZigBee 3.0 gateway Smart air box is the home of smart device for remote monitoring of ambient air, you can also detect formaldehyde, VOC of poisonous gases, CO2, temperature, humidity and so on through five types of environmental parameters, in environmental parameters exceed offered automatically when smart graffiti at home air conditioning, new fan, humidifier, air purifier in domestic optimization environment.Smart air box detection field: formaldehyde, VOC gas sensor, CO2, temperature, humidityMaterial:plasticcolour:WhitePackage Contents:1 * Gas Detector1 * USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.