SR1239B using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and other instruments or systems for monitoring DC5Vvoltage state quantities.The internal use of high-precision sensing core and related devices to ensure high reliability and excellent long-term stability,can be customized RS232,RS485,CAN,4-20mA,DC0~5V/10V,ZIGBEE,Lora,WIFI,GPRS and other output methods.
Technical Parameters
| Technical parameter | Parameter value |
| Brand | SONBEST |
| Input Signal | DC0~5V voltage |
| Communication Interface | RS485 |
| Default baud rate | 115200 8 n 1 |
| Power | DC9~24V 1A |
| Running temperature | -40~80°C |
| Working humidity | 5%RH~90%RH |
Wiring instructions
Any incorrect wiring can cause irreversible damage to the product. Please carefully wire the cable as follows in the case of power failure, and then connect the cable to confirm the correctness and then use it again.
| ID | Core color | Identification | Note |
| 1 | Red | V+ | Power + |
| 2 | Green | V- | Power - |
| 3 | Yellow | A+ | RS485 A+ |
| 4 | Blue | B- | RS485 B- |
Product Pictures
