Item Type: Temperature and Humidity Transmitter Material: Plastic Weight: Approx. 194g/6.84oz Size: 110x70x38mm/4.33x2.76x1.50in Coding: 8 bit binary Data Bits: 8 bits Parity Bit: None Stop Bit: 1 Error Checking: CRC (Redundant Cyclic Code) Baud Rate: 400bit/s, 4800bit/s, 9600 bit/s can be set, the factory default is 9600bit/s DC Power Supply (Default): 10 to 30V DC Power Consumption: 1.2W12V DC, 25 Average Current: 85mA Transmitter Circuit Working Temperature And Humidity: -40 to +60, 0%RH-95%RH non condensing Temperature Measurement Range: -40 to +80 Temperature Measurement Accuracy: 0.5 Humidity Measurement Range: 0-100%RH Humidity Measurement Accuracy: 3%RH Air Pressure Measurement Range: 600-1100HPa Barometric Pressure Measurement Accuracy: 0.5HPa CO2 Measurement Range: 0-5000, 10000ppmDefault range 0-5000 CO2 Measurement Accuracy: 20ppm PM2.5/10 Measuring Range: 0-1000ug/m3 PM2.5/10 Measurement Accuracy: read numbers10%(25) Output Signal: 485 signal Stability: 2%FS Nonlinear: