Specifications:

• Item Type: Temperature Sensor Module
• Function Description of PTA9B01 PT100 RS485 Sensor Module:
• Supply Voltage: DC 8‑25V(12V is recommended)
• Working Current: 8‑13mA
• MODBUS RTU protocol, 03 read instruction, 06 write instruction.
• Serial Port Baud Rate: 9600 (default), N, 8,1
• Up to 247 modules can be cascaded by modifying the 485 address (please use R485 Repeaters for more than 16)
• Temperature and PT100 resistance values can be read
• Adaptive Sensor: PT100 3‑wire or 2‑wire sensor
• Temperature Measurement Range: ‑20℃ to +220℃