pm2 5 co2 voc co sensor smart fresh air controller

{"cid":"91225759","title":"Smart Fresh Air Controller with PM2.5 CO2 VOC CO Sensor and Tuya WiFi APP Remote Control via Modbus RS485 Interface","imgUrl":"https:\/\/img.chinax.com\/nimg\/18\/35\/eeff8dbecd664844dffae21409b0-200x200-1.jpg","attrs":{"Price":"US$79\/pcs","Brand Name":"OEM or neutral (no brand)","Model Number":"G3","Minimum Order Quantity":"1","Delivery Time":"2-3 weeks","Supply Ability":"100000pcs","Scheduling":"7-day programmable schedule","Fan Control":"3-Speed (Low\/Med\/High)","Packaging Details":"Cartons","Control Interface":"ModBus RTU (RS485)","Temperature Monitoring":"Supported (Real-time display)","Payment Terms":"T\/T","Standby Power":"\u2264 3.0W","Place of Origin":"China","Mounting":"Standard 86 wall mounting box"}}