2 Channel 5V Relay Board Module
Specifications:
- Low Level Trigger Relay Module. RoboticsBD
- Two separate LEDs for On/Off indication of the Relay.
- Triggering input voltage 3.3V – 5V
- Two separate LEDs for On/Off indication of the Relay
- Triggering input voltage 3.3V – 5V 4)
- Back EMF protection
- Back EMF protection 2 LEDs to indicate when relays are ON.
- Works with logic level signals from 3.3V or 5V devices
- Opto isolation circuitry
- Module with diode current protection, short response time
- AC Control Voltage: 250V @max.10A
- DC Control Voltage: 30V @max. 10A
Original price was: 149৳ .135৳ Current price is: 135৳ .
16 in stock
16 in stock
Payment Methods:
Description
🔌 2 Channel 5V Relay Board Module
Dual Channel | 10A Relay | Arduino Compatible | High Power Switching Module
📌 Overview
The 2 Channel 5V Relay Board Module is an electronic switching device that allows microcontrollers like:
-
Arduino
-
ESP8266 / ESP32
-
Raspberry Pi
-
STM32
to safely control high-voltage AC or DC loads using low-voltage digital signals.
This module contains two independent 5V relays, allowing control of two separate devices.
⚡ Relay Specifications
| Feature | Specification |
|---|---|
| Relay Type | Electromagnetic |
| Operating Voltage | 5V DC |
| Number of Channels | 2 |
| Contact Rating | 10A 250VAC |
| Contact Rating | 10A 30VDC |
| Relay Model | JQC-3FF-S-Z (common) |
🔌 Input Pin Configuration
| Pin | Function |
|---|---|
| VCC | 5V Power |
| GND | Ground |
| IN1 | Control Channel 1 |
| IN2 | Control Channel 2 |
Control logic:
-
LOW → Relay ON (most boards are active-low)
-
HIGH → Relay OFF
(Check board version)
🔌 Output Terminal (Per Channel)
Each channel has 3 screw terminals:
| Terminal | Function |
|---|---|
| COM | Common |
| NO | Normally Open |
| NC | Normally Closed |
Operation:
When relay OFF:
-
COM connected to NC
When relay ON:
-
COM connected to NO
🧠 Working Principle
-
Microcontroller sends LOW/HIGH signal.
-
Transistor driver activates relay coil.
-
Magnetic switch changes contact position.
-
High-voltage device turns ON or OFF.
It provides electrical isolation between low-voltage control circuit and high-voltage load.
💡 Onboard Features
✔ 2 × 5V Relays
✔ Transistor driver circuit
✔ Flyback diode protection
✔ 2 × Status LEDs (Relay indicators)
✔ Power LED
✔ Screw terminals
✔ Mounting holes
📐 Electrical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 5V |
| Control Current | ~15–20mA per channel |
| Switching Current | Up to 10A |
| Isolation | Mechanical isolation |
📏 Physical Specifications
-
PCB Color: Black / Blue
-
Compact rectangular design
-
Standard 2.54mm header pins
-
Mounting holes for secure installation
🎯 Advantages
✔ Control two devices independently
✔ Safe high-voltage switching
✔ Easy Arduino integration
✔ Low cost and reliable
✔ Compact design
✔ Suitable for automation projects
📦 Applications
-
Home automation systems
-
AC light & fan control
-
Motor control
-
Water pump control
-
Industrial automation
-
Smart appliances
-
Robotics projects
-
Timer-based switching systems
⚠ Safety Notes
-
Handle AC mains voltage carefully.
-
Do not exceed 10A load rating.
-
Use proper wire insulation.
-
Avoid touching terminals when powered.
🆚 1 Channel vs 2 Channel Relay
| Feature | 1 Channel | 2 Channel |
|---|---|---|
| Number of Loads | 1 | 2 |
| Size | Smaller | Slightly Larger |
| Control Pins | 1 | 2 |
| Applications | Single device | Multiple devices |
🧑💻 Basic Arduino Example
Customer Reviews
Related Products
Piezo Element (Connected Wire) 35mm
In stock
20W 5V 5A SMPS Power Supply Module Universal AC Input
In stock
Soldering Iron 60W & Heating Element Coil
In stock
Banana Plug Connector (Black-Red Pair)
In stock
Breadboard Full Size Bare 830 Tie Points
In stock
Reviews
Clear filtersThere are no reviews yet.