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Item #:
85077492
4Pcs 1 Channel DC 3V / 3.3V Relay High Level Driver Module Optocoupler Isolated Driver Control Module
Item #:
85077492
SAR 57
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Order now and get it around Thursday, August 13
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Widely used in industrial automation, power systems, electronic equipment and other fields, it plays a role in circuit regulation and control, safety protection, and conversion circuits.
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What Stands Out
High-Level Driving
This relay module is designed for high-level signal control, ensuring compatibility with a range of microcontrollers. It simplifies control circuits, making it user-friendly for both beginners and experienced hobbyists.
Optocoupler Isolation
The optocoupler isolation protects sensitive components from high voltage spikes, providing reliable operation in diverse environments. This feature enhances safety and longevity, particularly in industrial applications.
Easy Integration
With clear pin configurations and a compact design, this module ensures easy integration into existing projects. It's ideal for automating household devices or enhancing robotic functionalities, promoting seamless development.
Product Details
| Connector Type | Quick Connect |
| Contact Type | Normally Closed |
| Current Rating | 10 Amps |
| Mounting Type | Panel Mount |
| Operation Mode | Automatic |
| Coil Voltage | 3.3 Volts |
| Contact Current Rating | 10 Amps |
| Maximum Switching Current | 10 Amps |
| Maximum Switching Voltage | 250 Volts |
| Minimum Switching Voltage | 3.3 Volts (DC) |
| Operating Time | 20 Seconds |
| Brand Name | DiGiYes |
| Part Number | EMD_21I |
| Manufacturer | DiGiYes |
| Included Components | 4 x 1 Channel Relay Driver Control Module |
| Contact Material | Steel |
| Item Weight | 0.2 lbs (90 grams) |
Who Should Buy?
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Hobby Electronics
Ideal for hobbyists working on small electronics projects requiring relay control and isolation.
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Arduino Projects
Perfect for Arduino users needing simple relay control to switch higher voltages automatically.
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Automation Systems
Suitable for those building DIY automation systems that need to control devices like motors and lights.
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Industrial Use
Not suitable for heavy-duty industrial applications requiring robust and high-power relays.
Product Description
4Pcs 1 Channel DC 3V / 3.3V Relay High Level Driver Module Optocoupler Isolated Driver Control Module
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the purpose of the 4Pcs 1 Channel DC Relay Driver Module?
Answer: The 4Pcs 1 Channel DC Relay Driver Module is designed to allow microcontrollers, like Arduino or Raspberry Pi, to control higher voltage devices, such as lights, motors, or other appliances. This versatility makes it ideal for home automation projects. The built-in optocoupler isolation protects your microcontroller from high voltage spikes, ensuring reliable performance without damage. -
Question:
How does the optocoupler work in this relay module?
Answer: The optocoupler in the relay module isolates the control side from the high-voltage side, which helps prevent interference and protect sensitive components. It transmits signals using light rather than electric current, thereby ensuring safety and integrity. This makes it suitable for applications where you control high-voltage equipment using low-voltage signals, providing a safe operating environment. -
Question:
Can this relay module be used with Arduino?
Answer: Yes, the 4Pcs 1 Channel DC Relay Module is compatible with Arduino. You can easily connect it to control various devices like lights or motors using simple code. Its low trigger voltage (3V to 3.3V) also makes it ideal for use in Arduino projects that require reliable switching without requiring external power, making your projects versatile and efficient. -
Question:
What are the key specifications of the relay module?
Answer: The relay module operates at 3V to 3.3V and features one channel capable of switching up to 10A at 250V AC or 30V DC. This makes it powerful enough for many applications, including automated tasks in home or industrial settings. The module also includes indicator LEDs for visual feedback, aiding in project development and debugging. -
Question:
How can I connect multiple relay modules?
Answer: To connect multiple relay modules, you can daisy-chain the power and ground lines while using separate signal pins for each module. This approach allows you to control multiple devices simultaneously from a single microcontroller board like the Arduino. Ensure that you keep track of the pin connections in your code to manage each relay properly. This facilitates the building of complex automation systems tailored to your needs. -
Question:
What applications are suitable for this relay control module?
Answer: The 4Pcs 1 Channel DC Relay Module is ideal for a variety of applications, including automation of home appliances, controlling motors in robotics projects, or managing HVAC systems. Its ability to safely switch high voltage loads makes it a go-to choice for DIY enthusiasts, hobbyists, and professionals requiring reliable control in their projects. -
Question:
How does the control mechanism work for triggering the relay?
Answer: Triggering the relay is simple; you apply a small voltage (3V to 3.3V) to the input pin of the module. This activates the optocoupler, which in turn closes or opens the relay switch. The relay can be controlled using a microcontroller or even manually via a switch. This mechanism allows for precise control over any connected device, enabling automated operations effortlessly. -
Question:
Is there a specific circuit diagram available for connecting this module?
Answer: Yes, circuit diagrams for the 4Pcs 1 Channel DC Relay Module are widely available online. These diagrams show how to connect the relay module to various microcontrollers such as Arduino or Raspberry Pi. Following a circuit diagram assures correct connections and optimal functioning, helping new users to set up their systems confidently and accurately. -
Question:
What should I consider when using this relay module in high-load applications?
Answer: When using the relay module for high-load applications, it’s essential to ensure that the load does not exceed the relay's rated capacity (10A, 250V AC or 30V DC). Additionally, consider incorporating a fuse or circuit breaker in your setup for safety. Proper heat management may also be necessary in prolonged use scenarios, ensuring reliable performance and longevity. -
Question:
Where can I buy the 4Pcs 1 Channel DC Relay Module in Saudi Arabia?
Answer: You can buy the 4Pcs 1 Channel DC 3V 3.3V Relay High Level Driver Module from Ubuy. Ubuy offers a wide selection of electronic components, ensuring you get high-quality products for your projects. Visit their website to find this relay module and explore other useful tools and parts that can enhance your DIY and automation efforts.
DiGiYes Relay Control Module Editorial Review
The 4Pcs 1 Channel DC Relay Module has garnered a generally positive reception from customers, particularly for its compatibility with 3.3V microcontrollers, making it an ideal choice for IoT sensors and various DIY projects. Users have noted the module’s compact design, which allows easy integration into tight spaces without compromising on function. Many reviewers have expressed satisfaction with the build quality of the relays, highlighting the well-executed solder points and the overall robust Construction. The inclusion of Phoenix/screw terminals for connections has also been appreciated, as it provides a secure and reliable method of attachment. Despite some praise, there are reservations regarding the documentation, specifically the lack of clear instructions on the jumpers' functions, which may lead to some guesswork during the initial setup. However, this minor concern does not seem to overshadow the general appreciation for the product's performance and reliability. **
Customer Reviews & Ratings
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Pros
- Excellent compatibility with 3.3V microcontrollers.
- Compact design suitable for limited spaces.
- High build quality with neat soldering.
- Secure connections via Phoenix/screw terminals.
Cons
- Lack of clear documentation on jumper functions, leading to confusion.
Platform Trust & Buyer Confidence
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Mekki
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“Arrive before time, excellent products”
9 July 2026 · via Trustpilot
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“A very big Thank you to HUDA and the Ubuy Team in helping to send my order to me yesterday!! Order # 62606425316 Customer service and operations is top for this online shopping company and I am very satisfied with the way they handle issues. THANK YOU once again!!”
25 June 2026 · via Trustpilot
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Mohamed
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“We feel very good about the delivery time, and the materials we received matched our order.”
14-Jul-26 · via Trustpilot
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Essam
Verified buyer
“Perfect service and fast delivery.”
16-Jul-26 · via Trustpilot
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Features & Benefits
- 1 channel 3V high-level relay control module
- Can control 10A 250V AC or 10A 30V DC loads
- Indicator light for signal output
- Optocoupler isolation for signal protection
- Anti-interference design
- Rotary crimping terminals for secure wiring
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