--- product_id: 313479636 title: "12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger" brand: "hiletgo" price: "€ 17.09" currency: EUR in_stock: true category: "Hi Letgo" url: https://www.desertcart.fr/products/313479636-12v-4-channel-relay-module-with-opto-isolated-support-high store_origin: FR region: France --- # 10A max current load High/Low level trigger selectable SMD optocoupler isolation 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger **Brand:** hiletgo **Price:** € 17.09 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Command your circuits with precision and confidence! ## Quick Answers - **What is this?** 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger by hiletgo - **How much does it cost?** € 17.09 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/313479636-12v-4-channel-relay-module-with-opto-isolated-support-high) ## Best For - hiletgo enthusiasts ## Why This Product - Trusted hiletgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Flexible Triggering:** Easily switch between high and low level triggers to fit any control logic. - β€’ **Rock-Solid Isolation:** SMD optocoupler ensures stable, noise-free operation and protects your circuits. - β€’ **User-Friendly Design:** Screw terminals and clear indicators make installation and monitoring effortless. - β€’ **Fail-Safe Reliability:** Fault-tolerant design keeps relays inactive even if control lines breakβ€”peace of mind guaranteed. - β€’ **Powerhouse Performance:** Handles up to 10A at 250V AC or 30V DC for robust device control. ## Overview The HiLetgo 12V 4 Channel Relay Module features four high-quality relays rated for 10A at 250V AC or 30V DC, with SMD optocoupler isolation for stable and noise-free switching. It supports both high and low level triggers selectable via jumpers, includes clear LED indicators for power and relay status, and offers a fault-tolerant design that prevents accidental activation. Its screw terminal interface and compact size make it ideal for professional-grade automation and control projects. ## Description 12V 4 Channel Relay Module With OPTO-Isolated Support High and Low Level Trigger Description : 1. The module uses genuine quality relay , normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A; 2. Using SMD OPTOCOUPLER isolation , driving ability , stable performance ; trigger current 5mA; 3. The module voltage is 12V; 4. Each way module can be set high or low triggered by jumper ; 5. Fault-tolerant design , even if the control line is broken , the relay will not operate ; 6. The power indicator ( green ) , 4 relay status indicator ( red ) 7. Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient 8. Module size : 73mm * 50mm * 18.5mm ( L * W * H ) 9. Has four mounting bolts holes , hole 3.1mm, 67mm * 44.5mm pitch Interface : 1. DC +: positive power supply ( voltage required by the relay , there 5V.9V.12V and 24V choice ) 2. DC-: negative power connection 3. IN1-IN4: each way based on the settings , can be high or low to control the corresponding relay outputs : a 12- line interface, the interface can be directly connected to all leads , user-friendly 1. NO1 - NO4: normally open relay interfaces , relay before the vacant after the pull shorted with COM 2. COM1 - COM4 Common Interface Relays 3. NC1 - NC4: normally closed relay interface relay shorted with COM ago , after the pull- vacant High and low trigger selection : 1.S1-S4 in order to relay a way -4 road high and low trigger selection ; 2.Com with low short circuit , triggering the corresponding relay is low , while the high end of the short com high trigger ## Features - HiLetgo 12V 4 Channel Relay Module - Using SMD OPTOCOUPLER isolation - High and Low Level Trigger ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00LW2GM84 | | Brand Name | HiLetgo | | Coil Voltage | 12 Volts | | Connector Type | Screw | | Contact Current Rating | 10 Amps | | Contact Material | Lead | | Contact Type | Normally Open | | Current Rating | 10 Amps | | Customer Reviews | 4.5 4.5 out of 5 stars (169) | | Manufacturer | HiLetgo | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 250 Volts | | Minimum Switching Voltage | 12 Volts | | Model | 3-01-0371 | | Mounting Type | Screw Mount | | Number of Items | 4 | | Operation Mode | Automatic | | Part Number | 3-01-0371 | | UPC | 702082656167 | | Unit Count | 4 Count | | Wattage | 60 Milliwatts | ## Product Details - **Connector type:** Screw - **Contact material:** Lead - **Contact type:** Normally Open - **Current rating:** 10 Amps - **Mounting type:** Screw Mount ## Images ![12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger - Image 1](https://m.media-amazon.com/images/I/719VuX-GPfL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - HiLetgo 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger - HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino - HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V --- ## 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.fr/products/313479636-12v-4-channel-relay-module-with-opto-isolated-support-high](https://www.desertcart.fr/products/313479636-12v-4-channel-relay-module-with-opto-isolated-support-high) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-10-06*