Feature:1. [7 In 1 Detection] 7 in 1 environmental detector, which can detect seven parameters of temperature, humidity, PM2.5, PM10, CO2, formaldehyde, and TVOC.2. [Stable Output] Professionally designed, this air quality monitor uses RS485 output (standard for Modbus RTU protocol) connection, the data is more stable.3. [Real Time And Accurate] High accuracy sensors can detect the environment in real time, and output data through a certain protocol format, which is easy to use.4. [Circuit Protection Structure] The design of multiple circuit protection structures protects the stability of the instrument and improves the stability of the instrument.5. [Widely Applicable] The environmental detector can be wall mounted or ceiling mounted, suitable for building HVAC, building energy saving, smart home, hospitals, schools, airport stations, etc.Specification:Item Type: Air Quality MonitorMaterial: ABSSize: Approx. 90 x 34mm / 3.5 x 1.3inUses: Widely Used in Building HVAC, Building Energy Saving, Smart Homes, Schools, Hospitals, Airport Stations, etcDetection Parameters: Temperature, Humidity, PM2.5, PM10, CO2, Formaldehyde, TVOCWorking Voltage: DC5V0.2V at 150mAWorking Environment: Working Temperature -10~60Working Humidity: 5~95%RH (Non Condensing)Communication Mode: A, Serial Port TTL Interface B, for Modbus RTU 485 InterfaceWarm Up Time: 5~10 Minutes, Semiconductor VOC Sensor, Theoretically Speaking, the Longer the Power on Time, More Stable Service Life: 3 Years (in Air)Installation Method: Wall Hanging, CeilingDetection Parameters and Resolution:SensorMeasurement ResolutionMeasuring RangeMeasurement AccuracyeCO21ppm400~5000ppm100ppmPM2.50.3 ug/m0~1000 ug/m10%PM100.3 ug/m0~1000 ug/m10%Temperature0.01-20~800.5Humidity0.04%5~100%RH3%RHTVOC1ug/m31230ug/m390ug/m3CH2O1ug/m3500ug/m340ug/m3.Package List:1 x Air Quality Monitor1 x Gusset PlateNote:1. Do not place the product in an environment that is too corrosive, humid and high temperature.2. Manual measurement, please allow some errors.