Feature: 1. HIGH SENSITIVITY PROBE: Temperature humidity transmitter sensor uses a high sensitivity gas detection probe with stable signal, high accuracy, fast response and long life. Customers should test the sensor in the application environment to ensure that the sensor meets the requirements. 2. PLUG IN STRUCTURE: Temperature humidity transmitter uses stainless steel gas guide tube and stainless steel flange combination of plug in structure, using professional test temperature and humidity sensor probe as the core detection device. 3. IP67 WATERPROOF: Temperature humidity sensor transmitter shell with full waterproof design, protection level IP67, specifically designed for plug in pipe temperature and humidity measurement. 4. RS485 OUTPUT: Temperature humidity sensor adopts RS485 output mode, featuring wide measurement range, high accuracy, good linearity, good versatility, easy to use, easy installation, long transmission distance, etc. 5. FOUR CORE CABLE: Four core shielded waterproof cable, black skin shielded wire, waterproof, oil proof, dust proof, strong anti interference ability and stable signal transmission. Specification: Item Type: Temperature Humidity Transmitter Sensor Material: ABS DC Power Supply: 12V‑24V DC Maximum Power Consumption: 0.4W Output Signal: RS485 Output Response Time: Generally Less Than 15 Seconds Temperature Long Term Stability Type: ≤0.1℃/year Humidity Long Term Stability: ≤1%/year Temperature Range: ‑40℃ to 80℃ Humidity Range: 0‑100%RH Temperature Resolution: 0.1℃ Humidity Resolution: 0.1%RH Product Length: Approx. 22CM/8.7in Gross Weight: 270g/9.5oz. Package List: 1 x Temperature and Humidity Transmitter Sensor1 x Accessories1 x Instruction Manual Note: All data are measured manually, and there are certain errors in the measurement results.5.1 Digital devices cannot be connected to the PLC or computer for the following possible reasons:The computer has more than one COM port and the port selected is incorrect.The device address is wrong, or there are devices with duplicate addresses (factory default all 1).Wrong baud rate, parity mode, data bits, stop bits.The host polling interval and waiting time for answer are too short, both need to be set above 200ms.The 485 bus is disconnected, or the A and B lines are reversed.The number of devices is too many or the wiring is too long, the power should be supplied nearby, add 485 enhancer, and add 120Ω terminal resistor at the same time.