Modbus RTU 8 Channel Latching Relay Module (C) with RS485 Interface Multi Isolation Protection Circuits Rail mounted Case
The Modbus RTU 8-Channel Latching Relay Module (C) with RS485 interface is an industrial-grade control module designed for reliable automation systems. Featuring latching relays that retain their state after power loss, it supports standard Modbus RTU communication and configurable addresses (1–255). With built-in power and magnetic isolation, TVS surge protection, and resettable fuse, it ensures safe and stable operation. Housed in a rail-mounted ABS enclosure, it is ideal for industrial control applications requiring high reliability.
وحدة ريليه 8 قنوات بنظام Latching وبروتوكول Modbus RTU مع واجهة RS485 هي وحدة صناعية للتحكم والأنظمة الآلية. تحتفظ بحالة الريليه حتى بعد انقطاع التيار، وتدعم عناوين قابلة للضبط من 1 إلى 255. تحتوي على دوائر عزل كهربائي ومغناطيسي، وحماية TVS ضد الارتفاعات المفاجئة، وفيوز قابل لإعادة الضبط لضمان التشغيل الآمن. تأتي بهيكل بلاستيكي ABS قابل للتركيب على سكة DIN، ومناسبة للتطبيقات الصناعية عالية الاعتمادية.
The Modbus RTU 8-Channel Latching Relay Module (C) is a professional industrial relay control solution designed for automation and remote switching applications via RS485 communication. It adopts the standard Modbus RTU protocol, ensuring compatibility with PLCs, HMIs, SCADA systems, and industrial controllers.
This module features 8 latching relays, allowing each relay to retain its state even after power loss. This ensures operational continuity and prevents unexpected switching after system restart.
Designed for industrial environments, it integrates multiple protection circuits including onboard power isolation, magnetic isolation for signal protection, TVS (Transient Voltage Suppressor) for surge suppression, resettable fuse for over-current protection, and reverse polarity protection. These features enhance reliability, safety, and resistance to electrical interference.
The module supports configurable device addresses (1–255), enabling multiple units to be cascaded on the same RS485 bus. It also provides flash-on and flash-off functionality, allowing timed switching operations through command parameters.
Housed in a durable rail-mounted ABS plastic enclosure, it is easy to install and safe for industrial control cabinets.
Specifications
| Power supply | 7~36V |
|---|---|
| Communication interface | RS485 |
| Baudrate | 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 |
| Default communication format | 9600, N, 8, 1 |
| Relay channels | 8 |
| Relay type | Latching relay |
| Contact form | 1NO 1NC |
| contact rating | ≤10A 250VAC/30VDC |
| Communication protocol | Standard Modbus RTU protocol |
| RS485 address | 1~255 |
| LED indicators | STA: MCU indicator, keeps flashing when the MCU is normally working TXD: TX indicator, lights up when sending data RXD: RX indicator, lights up when receiving data |
Applications
Industrial automation systems
PLC-based control systems
SCADA monitoring systems
Smart factory equipment
Remote power switching
Building automation systems
Energy management systems
Machine control panels