5V Relay Module - 4 Channel
5V Relay Module - 4 Channel
5V Relay Module - 4 Channel
5V Relay Module - 4 Channel

5V Relay Module - 4 Channel

Relay
REL720
€6.50
In Stock
Immediate Dispatch
5V 4-Channel Relay Module – SPDT contacts rated AC250V/10A & DC30V/10A, 50–60mA driver current per channel. Control high-current appliances directly from any 5V MCU such as Arduino.

 

The 5V 4-Channel Relay Module is a ready-to-use interface board that lets any 5V microcontroller switch high-current AC or DC loads safely. Each of the four independent SPDT relays is driven by just 50–60mA from your MCU's GPIO pin, making it a go-to solution for home automation, industrial control, and prototyping projects that need to switch mains or high-voltage DC equipment.

Key Features

  • 4 Independent SPDT Relay Channels: Each channel provides Normally Open (NO) and Normally Closed (NC) contacts → maximum wiring flexibility for any switching scenario
  • High-Current Contacts: Rated AC250V 10A / DC30V 10A per channel → safely switches mains appliances, motors, and lighting
  • 5VDC Coil Voltage: Driven directly from 5V logic → no level-shifting or extra circuitry needed with Arduino or other 5V MCUs
  • Low Driver Current: 50–60mA per relay coil → compatible with standard GPIO outputs without external buffers
  • Status Indication LEDs: One LED per relay channel → instant visual feedback on relay state during development and debugging
  • Wide MCU Compatibility: Works with Arduino, PLC outputs, and any MCU with 5V control signals → drop-in solution for countless platforms

Pinout & Wiring

Pin LabelSymbolDescription
VCCVCC5V power supply input for relay coils
GNDGNDCommon ground
IN1CH1Control signal for Relay 1 (active LOW typical)
IN2CH2Control signal for Relay 2
IN3CH3Control signal for Relay 3
IN4CH4Control signal for Relay 4

Wiring note: Connect VCC to Arduino's 5V pin and GND to GND. Connect IN1–IN4 to any available digital GPIO pins. Each relay's screw terminals expose NO, COM, and NC connections for your load wiring.

Compatibility

  • Arduino UNO / Nano / Mega: Native 5V logic – plug and play, no level shifter required
  • PLC outputs: Compatible with standard 5V PLC digital outputs for industrial switching applications
  • Any 5V MCU: Supports all microcontrollers operating at 5V logic levels

Typical Applications

  • Smart home automation: Control lights, fans, and household appliances from an Arduino or home automation controller
  • Industrial field control: Interface low-voltage MCU logic with heavy-duty industrial equipment via PLC systems
  • DIY electronics projects: Prototype irrigation systems, garage door openers, or temperature-controlled heaters
  • AC mains switching: Safely switch 230V AC loads (lamps, pumps) under microcontroller supervision
  • DC motor / solenoid control: Switch high-current DC loads up to 30V 10A in robotics or automation rigs

Technical Specifications

ParameterValue
Number of Channels4
Control InterfaceDigital GPIO (5V logic)
Rated Coil Voltage5V DC
Driver Current per Channel50–60mA
Contact ConfigurationSPDT (NO / COM / NC)
Max Contact Current10A
Max AC Voltage250V AC
Max DC Voltage30V DC
Status IndicationLED per channel

FAQ

Q: Can I use this module with a 3.3V MCU like ESP32 or Raspberry Pi?
A: The relay coils require 5V, and the control inputs are designed for 5V logic. A 3.3V GPIO signal may or may not trigger the relay reliably. For ESP32/RPi use, it is recommended to power the board from 5V and use a level shifter or an opto-isolated variant designed for 3.3V control inputs.

Q: Is the module active-HIGH or active-LOW?
A: Most 4-channel relay modules of this type are active-LOW (relay energises when the input pin is pulled LOW), but verify the silkscreen or datasheet of your specific board before wiring.

Package Contents: 1 × 5V 4-Channel Relay Module

⚠ Safety Warning: This module is intended for use by qualified individuals familiar with mains voltage wiring. AC250V contacts can be lethal. Always disconnect power before wiring the load side of the relay terminals. Ensure proper insulation and comply with local electrical regulations.
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