Feature: 1. EASY TO INSTALL: Adopt high accuracy temperature and humidity measurement unit, long term stability, small size, wall mounted, rail mounted 2. COMMUNICATION: Using dedicated 485 circuit, standard RTU communication protocol, communication address and baud rate can be set 3. BASIC SPECIFICATIONS: 10~30V wide voltage range power supply, the output signal type is RS485, the longest communication is 2000 meters 4. PROTECTION GRADE: Industrial wall mounted high protection grade housing, protection grade IP65, rain and snow protection and good air permeability 5. ADVANCED CHIP: The circuit adopts industrial grade microprocessor chip and imported temperature and humidity sensor to ensure excellent reliability, and interchangeability Specification: Item Type: Temperature Humidity Transmitter Material: ABS Size: Approx. 147 x 88 x 41mm / 5.80 x 3.46 x 1.61in Power Supply Wiring: Wide Voltage 10~30V DC Power Input DC Power Supply (Default): DC 10-30V Maximum Power Consumption: 0.4W A Accurate Humidity: ±2%RH (60%RH, 25℃) Temperature: ±0.4°C (25℃) B Accuracy (Default) Humidity: ±3%RH (60%RH, 25℃) Temperature: ±0.5℃ (25℃) Transmitter Circuit Operating Temperature and Humidity: -20℃~+60℃, 0%RH~95%RH (Non Condensing) Probe Working Temperature: -40℃~+120℃ Default: -40℃~+80℃ Probe Working Humidity: 0%RH-100%RH Communication Protocol: RTU Protocol Output Signal: 485 Signal Temperature Display Resolution: 0.1℃ Humidity Display Resolution: 0.1%RH Temperature and Humidity Flush Time: 1s Hole Size: Approx. 70mm / 2.76in Long Term Stability Humidity: ≤1%RH/y Temperature: ≤0.1℃/y Response Time Humidity: ≤8s (1m/s Wind Speed) Temperature: ≤25s (1m/s Wind Speed) Parameter Setting: Set by Software Model: RS- Codes Company Codes WS- Temperature Humidity Transmitter, Sensor N01- 485 Communication (RTU Protocol) 2D Industrial Wall Mount Specific Wiring: Circuit Identification Description Power Supply VCC Power Supply Positive (10~30V DC) GND Power Supply Negative Communications 485A 485-A 485B 485-B Wiring Instructions: Power and 485 Signals Wide Voltage Power Input 10~30V Can Be Used. When Wiring The 485 signal line, pay attention that the 2 lines A and B cannot be reversed, and the addresses of multiple devices on the bus cannot be conflicted. (Note: The device does not provide a communication line by default) Basic Communication Parameters: Encoding: 8bit Binary Data Bits: 8 Bits Parity Bit: None Stop Bit: 1 Bit Error Check: CRC (Redundant Cyclic Codes) Baud Rate: 2400bit/s, 4800bit/s, 9600 bit/s can be set, the factory default is 4800bit/s Common Problems and Solutions: The device cannot be connected to the PLC or computer Possible Reason: 1. The computer has multiple COM ports, and the selected port is incorrect 2. The device address is wrong, or there are devices with duplicate addresses (The factory default is all 1) 3. Baud rate, check mode, data bit, stop bit error 4. The 485 main wire is disconnected, or the A and B lines are reversed 5. If the number of devices is too large or the wiring is too long, power supply should be provided nearby, 485 boost should be added, and 120Ω terminal resistance should be added at the same time 6. The USB to 485 driver is not installed or damaged 7. The equipment is damaged Weight: Approx. 157g / 5.54oz. Package List: 2 x Screw2 x Expansion Tube1 x Temperature Humidity Sensor1 x User Manual Note: 1. There are certain specification requirements for 485 line field wiring, please refer to the data package 485 Equipment Field Wiring Manual for details.2. When the device is connected to the 485 bus, ensure that the addresses of multiple devices will not be repeated.