--- product_id: 301681065 title: "YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module" brand: "ywh-wh" price: "€ 0.02" currency: EUR in_stock: false url: https://www.desertcart.hr/products/301681065-ywh-wh-rs485-relay-module-dc-12v-16-channel-rtu store_origin: HR region: Croatia --- # 255s Delay 12V Power 16 Channels YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module **Brand:** ywh-wh **Price:** € 0.02 **Availability:** ❌ Out of Stock ## Summary > πŸ”§ Unleash Your Automation Potential! ## Quick Answers - **What is this?** YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module by ywh-wh - **How much does it cost?** € 0.02 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/301681065-ywh-wh-rs485-relay-module-dc-12v-16-channel-rtu) ## Best For - ywh-wh enthusiasts ## Why This Product - Trusted ywh-wh brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact Design:** Lightweight at only 1 gram, perfect for any project. - β€’ **Powerful Control:** Effortlessly manage up to 16 channels with precision. - β€’ **Versatile Commands:** Choose from 6 command modes for ultimate flexibility. - β€’ **Low Standby Current:** Save energy with a minimal standby current of just 11MA. - β€’ **User-Friendly Interface:** Easily configure via MODBUS RTU for seamless integration. ## Overview The YWH-WH RS485 Relay Module is a robust DC 12V relay board designed for efficient control of up to 16 channels. With a low standby current and versatile command options, it’s perfect for various applications, from PLC controllers to Raspberry Pi projects. Weighing only 1 gram, it’s compact yet powerful, making it an essential tool for modern automation enthusiasts. ## Description In order to provide better service, if you receive unsatisfactory products, please contact us as soon as possible, we will make timely remedial measures to your satisfaction.Features:1. Working voltage is DC 12V.2. Standby current (all relays closed) is 11MA, 1 relay open 40MA, 2 relays open 67MA, 3 relays open 95MA, 4 relays open 121MA, 5 relays open 147MA, 6 relays open 173MA, 7 relays open 198MA, 8 relays open 222MA...3. 6 Commands: "Open", "close", "Momentary", "Self-locking", "Interlock" and "Delay".4. MODBU RTU command control mode, the maximum delay is 255 seconds.5. MODBU commands can be made serial HyperTerminal (serial assistant) or "Modbu Poll" enter.6. Under the MODBU command mode, this relay module can support up to 64 devices in parallel.Specification:Working Voltage: DC 12VStandby Current: 11MAMax Load: 10A/250VAC, 10A/125VAC, 10A/30VDC, 10A/28VDC, 10A/12VDCSize: Approx. 17*6.5*2cm / 6.7*2.5*0.8inWeight: Approx. 224g/7.9ozTypical applications:MODBU command mode (HEX), you can control a variety of ways: Serial Hyper Terminal Control (need to manually add the CRC), Modbs Poll software control (software automatically add the CRC), PLC or MCU process control.WIring DIagram:1. DC 12V control circuit,Wiring diagram below. "LOAD" may be camera,LED lights, fans, motors and other DC 12V equipment.2. DC 1-100V or AC 85-265V control circuit,Wiring diagram below(Note:If not DC 12V load, need another DC 12V power supply). "LOAD" may be LED lights, fans, motors Lights, fluorescent lights, solar water heaters and other DC AC equipment.Package list:1 * 16 Channel RS485 Relay ## Features - Standby current (all relays closed) is 11MA, 1 relay open 40MA, 2 relays open 67MA, 3 relays open 95MA, 4 relays open 121MA, 5 relays open 147MA, 6 relays open 173MA, 7 relays open 198MA, 8 relays open 222MA... - Working voltage is DC 12V. - 6 Commands: "Open", "close", "Momentary", "Self-locking", "Interlock" and "Delay". - MODBU RTU command control mode, the maximum delay is 255 seconds. - MODBU commands can be made serial HyperTerminal (serial assistant) or "Modbu Poll" enter. ## Technical Specifications | Specification | Value | |---------------|-------| | Item Weight | 1 g | | Item Weight | 1 Grams | ## Images ![YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module - Image 1](https://m.media-amazon.com/images/I/61ipDPrfZOL.jpg) ![YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module - Image 2](https://m.media-amazon.com/images/I/71rhImMcZgL.jpg) ![YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module - Image 3](https://m.media-amazon.com/images/I/718W0CeyXSL.jpg) ![YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module - Image 4](https://m.media-amazon.com/images/I/61jxChMKLsL.jpg) ![YWH-WH RS485 Relay Module, DC 12V 16 Channel RTU RS485 Relay Module Board PLC Controller Serial Port Switch for R3 MEGA 2560 1280 DSPs ARM PIC AVR STM32 Raspberry Module - Image 5](https://m.media-amazon.com/images/I/611NdmSj0TL.jpg) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/301681065-ywh-wh-rs485-relay-module-dc-12v-16-channel-rtu](https://www.desertcart.hr/products/301681065-ywh-wh-rs485-relay-module-dc-12v-16-channel-rtu) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-24*