8-Channel Modbus RTU Latching Relay Module (C) with RS485, Rail-Mounted
100 units available with a short lead time.
The 8-Channel Modbus RTU Latching Relay Module (C) is an industrial-grade relay controller with RS485 communication, designed for reliable automation in demanding environments. The latching relays retain their state after power loss, ensuring consistent operation without manual reset.
Communication and power are fully isolated with onboard opto-isolation, resettable fuse, TVS diode protection, and reverse-polarity protection. The module supports cascading up to 255 devices on a single RS485 bus via configurable addresses, and includes flash-on/flash-off timing control for automated relay scheduling.
Key Features
- Latching Relays – Retain state after power loss, no manual reset required
- Modbus RTU Protocol – Standard industrial protocol for seamless integration with PLCs and SCADA
- RS485 Communication – Opto-isolated with magnetic isolation for signal integrity
- Cascadable – Configurable device address (1–255) for multi-module RS485 bus networks
- Flash-On/Flash-Off – Built-in timing control for automatic relay scheduling
- Surge Protection – Resettable fuse and TVS diode for lightning and ESD protection
- Reverse-Polarity Protection – Safeguards against accidental wiring errors
- Rail-Mounted Enclosure – ABS plastic case for DIN rail installation
Specifications
- Relay Rating: 10A at 250VAC / 30VDC
- Contact Configuration: 1NO + 1NC per channel
- Power Supply: 7–36VDC
- Default Baud Rate: 9600 bps (N, 8, 1)
- Available Baud Rates: 4800–256000 bps
- LED Indicators: 3× (STA, TXD, RXD)
- Dimensions: 145 × 90 × 40 mm
- Weight: 233 g
Ideal For
- Industrial automation and control systems
- Building management and lighting control
- Remote relay switching via RS485 networks
- PLC and SCADA integration
Package Contents
- 1× 8-Channel Modbus RTU Latching Relay Module (C)
Resources
The 8-Channel Modbus RTU Latching Relay Module (C) with RS485, Rail-Mounted appears in the following collections:
