--- product_id: 323176627 title: "8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller" brand: "lufasa" price: "1.82 OMR" currency: OMR in_stock: false url: https://www.desertcart.com.om/products/323176627-8ch-modbus-relay-module-8bit-modbus-rtu-switch-signal-input store_origin: OM region: Oman --- # Modbus-RTU RS485 Communication 8 Channels 8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller **Brand:** lufasa **Price:** 1.82 OMR **Availability:** ❌ Out of Stock ## Summary > 🔧 Power Your Projects with Precision! ## Quick Answers - **What is this?** 8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller by lufasa - **How much does it cost?** 1.82 OMR with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/323176627-8ch-modbus-relay-module-8bit-modbus-rtu-switch-signal-input) ## Best For - lufasa enthusiasts ## Why This Product - Trusted lufasa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Control:** Manage up to 8 devices simultaneously with precision and reliability. - • **User-Friendly Setup:** Plug-and-play design ensures quick installation and minimal downtime. - • **Real-Time Monitoring:** Receive instant feedback on device status for proactive management. - • **Seamless Integration:** Easily connects with existing Modbus systems for effortless upgrades. - • **Versatile Compatibility:** Supports both RS485 and TTL protocols for maximum flexibility. ## Overview The 8CH Modbus Relay Module is a cutting-edge solution designed for efficient control of multiple devices through Modbus-RTU communication. With 8 channels and support for both RS485 and TTL protocols, this module offers seamless integration and robust performance for professional applications. ## Description 1.Descriptions: LC-Modbus-8R-D7 is a 8-channel Modbus relay module equipped with mature and stable 8-bit MCU and RS485 level communication chip,adopt standard MODBUS RTU format RS485 communication protocol. It can realize 4bit input signal detection and 4bit relay output. It can be used for digital detection or power control occasions..2.Features: 1>.Support Modbus RTU protocol 2>.Support RS485/TTL UART interface 3>.Output indicator in multi mode 4>.Address can be set 5>.Support input reverse connection protection 6>.Relay switch output 7>.Support parameter memory function 8>.Optocoupler isolation3.Parameters: 1>.Product name: LC-Modbus-8R-D7 MODBUS Relay Module 2>.Model:LC-Modbus-8R-D7 3>.Work voltage:DC 7V-30V 4>.Baud rate:4800/9600/19600bps(default 9600bps) 5>.Optocoupler input signal:DC 3.3V-30V 6>.Set address:1~255 7>.Relay control mode: ON/OFF,Delay_ON,Delay_OFF mode 8>.Delay time: 0~6553.5s 9>.Load: AC 250V 10A or DC 30V 10A 10>.Protocol:Modbus RTU 11>.Interface:RS485/TTL UART 12>.Control channel: 8channel 13>.Work Temperature:-20℃~85℃ 14>.Work Humidity:10%~85%RH 15>.PCB Size:143*80*20mm4.MODBUS RTU Command: 1>.Suppose the device address is 0xFF so return 00 10 00 00 00 01 02 00 FF EB 80 and the 9th byte is device address. 2>.Turn ON CH_1 Relay(Normal Mode): Send: FF 05 00 00 FF 00 99 E4 Return: FF 05 00 00 FF 00 99 E4 Note_1:The 1st byte is device address. Note_2:The 2nd byte is function code. Note_3:The 3rd and 4th byte are relay addresses. So it can be 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007. Note_4:The 5th and 6th byte are relay data.0xFF00 means turn ON relay and 0x0000 means turn OFF relay. Note_5:The 7th and 8th byte are CRC code. 3>.Turn OFF CH_1 Relay(Normal Mode): Send: FF 05 00 00 00 00 D8 14 Return: FF 05 00 00 00 00 D8 14 4>.Turn ON ## Features - 8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller ## Product Details - **Current Rating:** 10 Amps - **Brand:** Lufasa - **Operation Mode:** Automatic - **Coil Voltage:** 30 Volts - **Maximum Switching Current:** 10 Amps ## Images ![8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller - Image 1](https://m.media-amazon.com/images/I/61HmAFG14VS.jpg) ![8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller - Image 2](https://m.media-amazon.com/images/I/61KykY2Kt2S.jpg) ![8CH Modbus Relay Module 8Bit Modbus-RTU Switch Signal Input Output RS485 TTL Controller - Image 3](https://m.media-amazon.com/images/I/514v5ohS8US.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.om/products/323176627-8ch-modbus-relay-module-8bit-modbus-rtu-switch-signal-input](https://www.desertcart.com.om/products/323176627-8ch-modbus-relay-module-8bit-modbus-rtu-switch-signal-input) --- *Product available on Desertcart Oman* *Store origin: OM* *Last updated: 2026-05-11*