4 Channel Isolated 5V 10A Relay Module opto coupler For Arduino PIC AVR DSP ARM

(11 customer reviews)

Out of stock

Approx Restocking Date: 26th June, 2024
SKU: 9729
  1. No. of Channel: 4
  2. Trigger Voltage: 5VDC
  3. Triode drive, increasing relay coil
  4. High impedance controller pin
  5. Pull-down circuit for the avoidance of malfunction
  6. Power supply indicator and Control indicator lamp
  7. Power supply and relay instructions, lit, the disconnect is off;
  8. The input signal, signal, common Terminal and start conducting;


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Category: Relay Modules
Tags: Relay, Contactor, Electromechanical Relay, PC Intelligent, 4 Channel Relay

It is a 4 Channel Isolated 5V 10A Relay Module Opto-coupler, A wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on can control it. It is also able to control various appliances and other types of equipment with a large current.

Relay output maximum contact is AC250V 10A and DC30V 10A. One can connect a microcontroller with standard interface directly to it. Red working status indicator lights are conducive to the safe use. It has a wide range of applications such as all MCU control, industrial sector, PLC control, smart home control.

Ready to get switching on your Raspberry Pi?! This neat relay module features 4 x 5V relays rated at 10A/250V each. It is designed to switch up to 4 high currents (10A) or high voltage (250V) loads with the help of microcontroller!

Each relay can individually switch on/off by an opto-isolated digital input, which that can connect directly to a microcontroller output pin. It only requires a voltage of approx 1.0V to switch the inputs on but can handle input voltages up to 5V. This makes it ideal for 1.0V to 5V devices.

Note: The relay type model available for this product is JQC3F-5VDC-C, SRD-05VDC-SL-C, and FL-3FF-S-Z. You may get any one of them randomly. 
On the high level and low level-triggered mode, friends who do not understand, have a look:
  • High-level trigger refers to the signal voltage between input and trigger, can be understood as a signal input with VCC cathode short-circuit triggered a way;
  • Low-level trigger refers to the signal voltage between the input terminal and Earth OV trigger, can be understood as the signal input terminal and the GND negative electrode short circuit triggered away  1-channel relay module connection

Features :

  1. One normally closed contact and one normally open contact
  2. Triode drive, increasing relay coil
  3. High impedance controller pin
  4. Pull-down circuit for the avoidance of malfunction
  5. Power supply indicator and Control indicator lamp
  6. Power supply and relay instructions, lit, the disconnect is off;
  7. The input signal, signal, common Terminal and start conducting;
  8. Useful for appliance control;
  9. DC or AC signal, control, you can control the 220V AC load;
  10. There is a normally open and one normally closed contact;
  11. The module is compliant with international safety standards, control and load areas isolation trenches.

Package Include :

1 x  4 Channel Isolated 5V 10A Relay Module Opto-coupler For Arduino PIC AVR DSP ARM – JQC3F-5VDC-C

No. of Channel


Trigger Voltage (VDC)


Trigger Current (mA)


Switching Voltage (VAC)


Switching Voltage (VDC)


Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.059 kg
Shipping Dimensions 9 × 7 × 3 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 11 reviews

4.7 overall

Add a review

  1. sugatthakrod (verified owner)

    Great Product!


  2. Reji (verified owner)

    The product is working fine, thought of giving 5 stars. unfortunately, the relay is getting welded while trying to control PSU (230V AC to 5v 5A / 10A / 20A DC ). Used the relay on the AC side. I can control other AC devices without any problem. Also the the relay works fine with above mentioned PSUs, if the LEDs are off while switching on/off the relays (eg:- Firmware like WLED)

    So finally switched to SSR module from robu and it works awesome.


  3. Deokant (verified owner)

    Product is good, but when I switch on the PI, default state is ON condition, whereas I want it to be OFF. I have different relay which is working fine.


  4. Shivraj Jangada (verified owner)

    good product

    Shivraj Jangada

  5. essajeesh (verified owner)

    One of the Best Quality Product and Best Place to order online .


  6. Shaibal Saha (verified owner)

    This product working fine. Future users please note down while designing ckt using this module that all 4 inputs are active low.

    Shaibal Saha

  7. B M Singh

    Tested and found good product. Fast delivery.

    B M Singh

  8. ykprakash (verified owner)

    Tested n found working with arduino. Code is given below.

    const int RelayPin= 8;
    bool status = false;

    void setup() {
    pinMode (RelayPin, OUTPUT);
    digitalWrite(RelayPin, LOW);
    digitalWrite(LED_BUILTIN, LOW);

    void loop() {

    status = !digitalRead(RelayPin);
    digitalWrite( RelayPin, status );
    digitalWrite( LED_BUILTIN, status );

    if (status){
    Serial.println(“Relay is On now”);
    Serial.println(“Relay is Off now”);


  9. Manish Kumar Arya (verified owner)

    Quality product, easy to interface with raspberry.
    This one has optocouplers to isolate 5v and 220v sides, giving protection to micro controllers used in projects.

    My implementation is documented at following links. I hope these will help other users too.



    Manish Kumar Arya

  10. Rohit Galgali (verified owner)

    Good product. Delivered in good condition

    Rohit Galgali

  11. Ashfaque KK (verified owner)

    good quality product which is exactly shown here.good packaging and fast delivery.

    Ashfaque KK


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Country Of Origin: China

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