4-Channel 5V Relay Module | Optocoupler Isolated for Arduino
₵40.00 Original price was: ₵40.00.₵38.00Current price is: ₵38.00.
Control 4 appliances with one board. This module contains 4 separate relays, allowing your Arduino or ESP32 to switch up to 4 high-voltage devices ON and OFF. It features Optocoupler isolation to protect your microcontroller from electrical noise and surges.
-
Channels: 4 Independent Relays.
-
Trigger: Low Level (Connect Input to GND to switch ON).
-
Load Capacity: 10A @ 250V AC / 10A @ 30V DC.
-
Best For: Home Automation, Smart Switches, and Industrial Control.
4 in stock
The 4-Channel 5V Relay Module (Low-Level Trigger) is a versatile and efficient relay switch that allows Arduino, Raspberry Pi, ESP32, and other microcontrollers to safely control high-voltage electrical appliances. Designed for home automation, industrial control, and IoT applications, this module supports simultaneous switching of up to four devices, making it perfect for smart home systems, robotics, and remote control projects.
🔹 Reliable & Safe Switching with Optocoupler Isolation 🔌
✔ Operating Voltage: 5V DC (Microcontroller Compatible).
✔ Trigger Type: Low-Level Trigger (Active LOW Switching).
✔ Relay Rating: AC 250V/10A | DC 30V/10A per channel.
✔ Optocoupler Protection: Prevents interference & enhances stability.
✔ LED Indicators: Each relay has an indicator LED for easy debugging.
✔ Screw Terminals: Secure connections for high-voltage devices.
✔ Compact & Durable Design: Perfect for embedded systems and automation projects.
🔹 Applications – Where to Use the 4-Channel 5V Relay Module 🛠️
✔ Smart Home Automation – Control lights, fans, and appliances remotely.
✔ Industrial & Security Systems – Manage alarms, motors, and electronic locks.
✔ Arduino & Raspberry Pi Projects – Integrate with IoT for cloud-based control.
✔ Remote Relay Switching – Enable relay activation via Wi-Fi, Bluetooth, or RF modules.
✔ DIY Electronics & Robotics – Use in smart circuits requiring multi-device control.
🔹 How to Use & External Resources 📚
The 4-Channel Relay Module connects easily to Arduino, ESP8266, STM32, and Raspberry Pi via a LOW (0V) trigger signal on the IN1, IN2, IN3, and IN4 pins. Simply connect VCC, GND, and control signals, and switch high-voltage devices safely.
📖 Helpful Resources for the 4-Channel 5V Relay Module:
✔ YouTube Tutorials – 4-Channel Relay Module with Arduino
🔹 Best Price & Availability in Ghana 🇬🇭
Looking for a 4-Channel 5V Relay Module (Low-Level Trigger) in Ghana? Whether for home automation, industrial control, or IoT projects, this efficient and reliable multi-device relay module is a must-have. Order today for fast delivery across Ghana!
Related products
16×2 LCD Display Module (Yellow) – High-Contrast Text
3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
A simple and reliable input device for Arduino and DIY electronics projects. This flexible 12-key keypad provides only the essential keys (0–9, *, #)—no letters—making it ideal for numeric-only applications. It comes with a peel-and-stick adhesive backing for quick mounting on enclosures, panels, or doors.
-
Keys: 12 (Telephone-style layout)
-
Interface: 7 pins (2.54 mm standard pitch)
-
Mounting: Self-adhesive sticker backing
- Best for: Electronic door locks, vending machines, access control systems, phone dialers, and keypad-based Arduino projects.
4×4 Matrix Membrane Keypad | 16 Button Keypad Module
-
Keys: 16 (0-9, A-D, *, #)
-
Mounting: Self-Adhesive Backing (Peel & Stick)
-
Interface: 8 Pins (Standard 2.54mm header)
-
Best For: Electronic Door Locks, Calculators, and Attendance Systems.
BMP180 Digital Barometric Pressure & Altitude Sensor Module
Predict the weather or measure your altitude. The BMP180 is a high-precision sensor that measures air pressure and temperature. Because pressure changes with height, it also works as an incredibly accurate altimeter (±1 meter accuracy).
-
Measures: Pressure (Pa) & Temperature (C)
-
Interface: I2C (SDA/SCL)
-
Voltage: 3.3V to 5V Compatible
-
Best For: Weather stations, Drones, and GPS altitude correction.
HC-SR04 Ultrasonic Sensor Module | Distance Measurement for Arduino
Give your robot eyes. The HC-SR04 uses sonar (sound waves) to measure distance, just like a bat. It is the standard sensor for obstacle avoidance robots and water level monitoring systems.
-
Range: 2cm to 400cm (4 Meters)
-
Accuracy: 3mm
-
Pins: VCC, Trig, Echo, GND
-
Best For: Obstacle avoiding cars, reverse parking sensors, and tank level detection.
IRF520 MOSFET Driver Module (0-24V) | PWM Motor & LED Controller
-
Max Load: 24V DC / < 5A.
-
Control Voltage: 3.3V or 5V (PWM Compatible).
-
Output: Pulse Width Modulation (Speed/Dimming control).
-
Best For: LED Strips, Small DC Fans, and Solenoids.
LDR Photosensitive Sensor Module (4-Pin) | Light Detector
- Sensor Type: Light Dependent Resistor (Photoresistor).
-
Outputs: Digital (D0) & Analog (A0).
-
Sensitivity: Adjustable via Blue Potentiometer.
- Best For: Automatic Lights, Sun Trackers, and Laser Tripwires.
MQ-135 Air Quality & Hazardous Gas Sensor Module | CO2, Smoke, Ammonia
Detect smoke and dangerous gases instantly. The MQ-135 is the most versatile gas sensor for air quality monitoring. It detects a wide range of gases including Ammonia, Sulfide, Benzene, Smoke, and CO2. Perfect for "Smart Home" safety systems and environmental monitoring.
- Gases Detected: NH3, NOx, Alcohol, Benzene, Smoke, CO2.
-
Output: Analog (Gas Concentration) and Digital (Alarm Trigger).
-
Warm-up Time: ~20 seconds.
-
Best For: Air Quality Monitors, Smoke Alarms, and Industrial Safety.

Reviews
There are no reviews yet.