10‑30V Wall Mount CO2 Sensor 485 Communication Carbon Dioxide Temperature and Humidity Transmitter for Agricultural Item Type: Temperature and Humidity Transmitter Material: Plastic Gross Weight: 170g / 6.0oz Size: 8.8x7.5x4.2CM / 3.5x3.0x1.7in Power Consumption: 0.3W (24V DC) Range: 0-5000ppm (default) Stability:<5% F · S or<10% reading per year Working Environment: - 10~+50 ℃, 0-95% relative humidity (non condensing) Preheating Time: 2min (available), 10min (maximum accuracy) Technical Support: 10-30V DC Accuracy: ± (50ppm+3% F·S) (25 ℃) Response Time:<30 seconds (diffusion) Expression: 485 Maximum Communication Distance: 2000m Interface Description: 2. When connecting 485 signal lines, note that the two lines A B cannot be reversed, and the addresses of multiple devices on the bus cannot conflict. Wiring Instructions:TypeThread ColorInstruction Power Supply BrownV+(10-30V DC)BlackV-CommunicationGreen485ABlue485BCommunication Parameters: Coding: 8 bit binary Data Bits: 8 bits Parity Bit: None Stop Bit: 1 Error Checking: CRC (Redundant Cyclic Code) Baud Rate: 2400bit/s, 4800bit/s, 9600 bit/s can be set, the factory default is 4800bit/s Application: Widely used in agricultural greenhouses, flower cultivation, edible fungi cultivation, etc. that need CO2 and temperature and humidity. Monitoring scenes.