Industrial 4-Channel Relay Module
4-channel relay module with Modbus RTU protocol over RS485 or RS232. Controls AC and DC loads independently from a host computer.
Pinout
- +1Type · Power
- -2Type · Ground
- VIN3Type · Power
- COM+4Type · Control
- IN15Type · Signal
- IN26Type · Signal
- IN37Type · Signal
- IN48Type · Signal
- COM-9Type · Ground
- NO110Type · Signal
- COM111Type · Signal
- NC112Type · Unknown
- NO213Type · Signal
- COM214Type · Signal
- NC215Type · Unknown
- NO316Type · Signal
- COM317Type · Signal
- NC318Type · Unknown
- NO419Type · Signal
- COM420Type · Signal
- NC421Type · Unknown
| Pin | Position | Type |
|---|---|---|
| + | 1 | Power |
| - | 2 | Ground |
| VIN | 3 | Power |
| COM+ | 4 | Control |
| IN1 | 5 | Signal |
| IN2 | 6 | Signal |
| IN3 | 7 | Signal |
| IN4 | 8 | Signal |
| COM- | 9 | Ground |
| NO1 | 10 | Signal |
| COM1 | 11 | Signal |
| NC1 | 12 | Unknown |
| NO2 | 13 | Signal |
| COM2 | 14 | Signal |
| NC2 | 15 | Unknown |
| NO3 | 16 | Signal |
| COM3 | 17 | Signal |
| NC3 | 18 | Unknown |
| NO4 | 19 | Signal |
| COM4 | 20 | Signal |
| NC4 | 21 | Unknown |
Pin details
21 connections- +1Power
- -2Ground
- VIN3Power
- COM+4Control
- IN15Signal
- IN26Signal
- IN37Signal
- IN48Signal
- COM-9Ground
- NO110Signal
- COM111Signal
- NC112Unknown
- NO213Signal
- COM214Signal
- NC215Unknown
- NO316Signal
- COM317Signal
- NC318Unknown
- NO419Signal
- COM420Signal
- NC421Unknown
Relays
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