The 4 Channel 5V Relay Module is a high-quality multi-relay switching board designed to control up to four independent AC or DC loads using low-voltage logic signals. Each relay provides electrical isolation and dependable operation, making it perfect for complex home automation, industrial equipment control, and advanced DIY projects. With optocoupler protection and compatibility with both 3.3 V and 5 V microcontrollers, it ensures safe and efficient switching for lights, motors, pumps, and other high-power devices.
Technical Specifications
Core Specifications
Operating voltage: 5 V DC
Trigger voltage: 3 V to 5 V DC (compatible with 3.3 V and 5 V logic)
Relay type: SPDT (Single Pole Double Throw) per channel
Load capacity: 10 A at 250 V AC or 10 A at 30 V DC for each relay
Trigger current: approximately 20 mA per channel
Electrical & Physical
Four independent relay channels with optocoupler isolation
LED indicators for module power and individual relay status
Screw terminals for safe high-voltage connections
Signal input pins for IN1, IN2, IN3, IN4, VCC, and GND
Module dimensions approximately 75 mm × 55 mm × 18 mm
Environmental
Operating temperature range: –40 °C to +85 °C
Reliable performance for both indoor and industrial environments
Why Choose the 4 Channel 5V Relay Module
Controls four separate AC or DC loads from a single compact board
Optocoupler isolation safeguards microcontrollers from voltage spikes
Compatible with Arduino, Raspberry Pi, ESP32, and other development platforms
Critical Uses
Smart home automation for lights, fans, pumps, and appliances
Industrial automation for multiple motor or solenoid controls
IoT and remote-controlled power management systems
Advanced DIY robotics and automation experiments
Pro Tips
Connect the module ground to the microcontroller ground for proper triggering
Do not exceed the rated current for each relay to avoid overheating
Use appropriate insulation and wiring when switching high-voltage AC loads
Package Includes
1 × 4 Channel 5V Relay Module