--- product_id: 345368604 title: "SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5)" brand: "teyleten robot" price: "₹ 3926" currency: INR in_stock: false reviews_count: 5 category: "Teyleten Robot" url: https://www.desertcart.in/products/345368604-songhe-1-channel-dc-3v-relay-high-level-driver-module store_origin: IN region: India --- # 10A high current capacity Optocoupler isolation for interference-free control Sub-20ms fast response time SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) **Brand:** teyleten robot **Price:** ₹ 3926 **Availability:** ❌ Out of Stock ## Summary > ⚡ Elevate your DIY projects with lightning-fast, interference-free relay control! ## Quick Answers - **What is this?** SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) by teyleten robot - **How much does it cost?** ₹ 3926 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/345368604-songhe-1-channel-dc-3v-relay-high-level-driver-module) ## Best For - teyleten robot enthusiasts ## Why This Product - Trusted teyleten robot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerhouse Performance:** Handles up to 10A at 250VAC/30VDC for heavy-duty projects - • **Lightning-Fast Response:** Activates in under 20 milliseconds to keep your system snappy - • **Plug & Play Flexibility:** High-level trigger compatible with Arduino and ESP32 GPIO pins - • **Interference-Proof Control:** Optocoupler isolation ensures your signals stay clean and reliable - • **Secure & Stable Installation:** Crimp connectors and mounting holes for rock-solid, professional setups ## Overview The SongHe 1 Channel DC 3V Relay Module is a compact, high-performance control board designed for microcontroller projects. Featuring a 10A switching capacity at 250VAC/30VDC, optocoupler isolation for signal integrity, and a rapid sub-20ms response time, it ensures reliable and efficient operation. Its versatile high-level trigger input and secure crimp connectors make it ideal for professional-grade Arduino and ESP32 applications. Pack of 5 modules offers great value for scalable projects. ## Description We are Songle original relay Size: 70mm X17mm X20mm (LxWxH) - Main chip: EL817, SRD-DC03V-SL-C - Work voltage: DC 3V/3.3V - Control 10A 250VAC, 10A 30VDC load Features - Instructions with the signal output; - Signal input port can connect microcontroller IO port, high level signal - Double power selection design anti-interference ability is strong, photoelectric isolation protection of high reliability - Current wide detection range:DC0-25V input - A diode current protection - Response time is less than 20 milliseconds - Relay long life can absorb 100000 times continuously - External connection use spinning crimping terminal, make connection firmer - With fixed installation hole, convenient installation,High Level Trigger:The relay module is triggered by high level signal, which can be input from microcontroller IO,Jumper Caps:You are free to select whether the relay and the signal share the same power supply or not by removing the jumper caps on the pins or not. It is recommended to share the same power supply, because that is more convenient for using. Review: Works as expected. Well made. The only problem it's five of them, I only needed one - what a waist. Review: They come attached, but are easy to split off individually if needed. They’re working great, controlled by simple GPIO pins from an ESP32 board. ## Features - High Level Driver Module - https://www.desertcart.com/dp/B0993CX9G5ref myi title dp - Links to regular customers with discounts, only 100 in stock - Optocoupler Isolator:3V/3.3V power relay module supports photocoupler isolation control. - 30VDC 250VAC Load：The power switch is compatible with 10A 250VAC and 10A 30VDC load. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07XGZSYJV | | Brand Name | Teyleten Robot | | Coil Voltage | 3 Volts | | Connector Type | Crimp | | Contact Current Rating | 10 Amps | | Contact Material | Silver | | Contact Type | Normally Open | | Current Rating | 10 Amps | | Customer Reviews | 4.6 4.6 out of 5 stars (204) | | Item Weight | 0.01 Ounces | | Manufacturer | SongHe | | Maximum Switching Current | 10 Amps | | Maximum Switching Voltage | 250 Volts | | Minimum Switching Voltage | 3 Volts | | Model | RK-S1B4-G97L | | Mounting Type | Panel Mount | | Number of Terminals | 2 | | Operation Mode | Manual | | Part Number | RK-S1B4-G97L | | Specification Met | cULus | | UPC | 724545020568 | | Unit Count | 5 Count | ## Product Details - **Connector type:** Crimp - **Contact material:** Silver - **Contact type:** Normally Open - **Current rating:** 10 Amps - **Mounting type:** Panel Mount ## Images ![SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) - Image 1](https://m.media-amazon.com/images/I/71vU7NaGpsL.jpg) ![SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) - Image 2](https://m.media-amazon.com/images/I/71QZl9zJMRL.jpg) ![SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) - Image 3](https://m.media-amazon.com/images/I/81WgU6Sf68L.jpg) ![SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) - Image 4](https://m.media-amazon.com/images/I/61OPnYkFigL.jpg) ![SongHe 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) - Image 5](https://m.media-amazon.com/images/I/81OZbOk07HL.jpg) ## Questions & Answers **Q: I'm still not clear with the jumpers are for. What does optoisolation do here?** A: There are a few reasons why you would use isolation here. By the way, jumpers are for isolation - although the top jumper is futile. To use the optoisolator, disconnect the bottom jumper and connect the left pin to ground for the signal coming in to the board and connect the right pin to the ground of the voltage that activates the relay. The VCC should be connected to the voltage source that operates the relay (or if you want to remove the top jumper, vcc goes to the right pin, however it is the same as leaving the jumper on and just wiring it to the vcc input on the board. - I have used this setup to run a bank of relays off of an esp32. This allows you to run many relays without any significant voltage drop on the esp32. You will need to provide an alternate vcc for the relays. Imagine running 15 relays off of the ESP32. That would possibly cause a voltage issue on the board. If all you need to do is run 15 tiny leds (I guess 30 if you include the indicator on the board) your voltage drop would be much much lower. Because this uses optoisolation, the circuit that sends the signal (usually a microcontroller) and the voltage that powers the relay, can be totally isolated. You could use a battery for one and a computer usb for the other - no common ground between the two. -- Not pointless by any means, but the circuit setup for this is goofy and causes you to scratch your head for a minute. **Q: Will 3v power the relay?** A: 3V ok **Q: I want to run this realy on a 2 AA battery box (3v total) do i need to do anything with jumpers?** A: No need to change, 3V ok **Q: I put 3.3v on vcc and grounded gnd. when i put 3.3v on in, the red led lights, but the relay doesn't close. is there something i'm missing here?** A: It should work. You are controlling a Transistor that is operating the relay. Make sure there is enough current in VCC to activate the relay. LED will light with only 1.3v and very little current. The relay must have 3.3V VCC. Also make sure your Arduino output line has the same ground as board. Using separate power supplies can cause the problem. Otherwise, I need more details about your connection. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***N on 2 February 2026* Works as expected. Well made. The only problem it's five of them, I only needed one - what a waist. ### ⭐⭐⭐⭐⭐ Review *by G***A on 26 October 2024* They come attached, but are easy to split off individually if needed. They’re working great, controlled by simple GPIO pins from an ESP32 board. ### ⭐⭐⭐⭐⭐ Review *by D***T on 31 August 2025* Awsome little rely boards. I am using them with an ESP32 and they are switching 24 VAC for zone valves and to trigger my boiler's circulator pump and burner. My only complaint is the screw holes are too small and very close to the terminal blocks, however, they still deserve 5 stars. Some have mentioned issues powering these. They are happiest receiving 5 volts to the VCC pin and ground and they have no issues with the 3.3 volt signal from the esp32. Just something to keep in mind when using these. I have a buck converter that reduces the 24 Volts AC to 5 volts DC with a 2 Amp capacity. I am running 10 sensors, 2 ESP32s, a SSR and 5 of these relays off a single converter so power draw isn't an issue. The boards are well made and the components are mounted very well. The indicator LED is nice to have and the relays have a solid and satisfying click when they are engaged. ## Frequently Bought Together - Teyleten Robot DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module for Arduino (Pack of 5) - AEDIKO 4pcs DC 5V Relay Module - 1 Channel Relay Switch Board with Optocoupler Isolation, High or Low Level Trigger - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects --- ## 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.in/products/345368604-songhe-1-channel-dc-3v-relay-high-level-driver-module](https://www.desertcart.in/products/345368604-songhe-1-channel-dc-3v-relay-high-level-driver-module) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-04-22*