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Relay Module Board 1 Channel 5V 10A Low Level Trigger

Relay Module Board 1 Channel 5V 10A Low Level Trigger

The 5V 1-Channel Low-Level Trigger Relay Module is designed to control electrical devices and high-current loads using a microcontroller or digital control circuit. It features a single relay rated for up to 10A at 250VAC or 30VDC, with a low-level trigger input for easy control. The module is suitable for Arduino, home automation, industrial control, and other electronic projects.

Package Includes

  • 1 x 5V 1-Channel Low Trigger Relay Module
No Optocoupler
13.00 AED 13.00 AED (Tax included)

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Features

  • Low-Level Trigger: Activates the relay when the input signal is LOW.
  • High-Current Switching: Supports relay contact ratings of up to 250VAC 10A or 30VDC 10A.
  • Normally Open and Normally Closed Contacts: Provides NO, NC, and COM terminals for different switching configurations.
  • LED Indicators: Includes power and relay status indicators for visual monitoring.
  • Microcontroller Compatibility: Can be controlled by compatible Arduino boards and other digital control circuits.
  • Screw Terminals: Provides secure connections for the switched load.
  • Compact Design: Suitable for embedded control systems and electronic projects.

Principle of Operation

How do 5v relay modules work in electronics?

The module uses a 5V relay controlled through an active-low input. When the input signal is LOW, the relay is activated and its contacts switch from their default state. When the input is HIGH, the relay returns to its default state. The COM terminal connects to NC when the relay is not energized. When the relay is activated, COM disconnects from NC and connects to NO. This allows the module to switch a connected device on or off according to the control signal.

Pinout

How do 5v relay modules work in electronics?

  • VCC: Connects to the module's 5V supply.
  • GND: Ground connection for the control circuit.
  • IN: Active-low relay control input. A LOW signal activates the relay.
  • COM: Common relay contact.
  • NO: Normally Open contact. Connects to COM when the relay is activated.
  • NC: Normally Closed contact. Connects to COM when the relay is not activated.

Wiring

To connect the relay module to an Arduino:

How to Interface High-Voltage Relay Module 5V One Channel with Arduino ElectroVigyan

  • Connect VCC to the Arduino 5V pin.
  • Connect GND to the Arduino GND pin.
  • Connect IN to a digital output pin, such as pin 2.
  • Connect the load to the relay's COM and NO or NC terminals, depending on the required switching behavior.

When using NO, the load is disconnected by default and switches on when the relay is activated. When using NC, the load is connected by default and disconnects when the relay is activated. Safety: The relay's contact rating does not make the module safe for every high-voltage application. Use suitable insulation, wiring, enclosures, and protective measures. Disconnect power before wiring the load.


Library

No library is required. The relay can be controlled using standard digital output functions available in Arduino IDE.

Simple Code

This example switches the relay on and off every second and displays its status in the Serial Monitor.

const int relayPin = 2;

void setup() {
  pinMode(relayPin, OUTPUT);
  digitalWrite(relayPin, HIGH); // Relay OFF
  Serial.begin(9600);
}

void loop() {
  digitalWrite(relayPin, LOW); // Relay ON
  Serial.println("Relay Status: ON");
  delay(1000);

  digitalWrite(relayPin, HIGH); // Relay OFF
  Serial.println("Relay Status: OFF");
  delay(1000);
}

Applications

  • Home automation and appliance control
  • Arduino and microcontroller projects
  • Industrial control systems
  • Motor, pump, and lighting control
  • Battery backup switching systems
  • Remote switching of electrical devices
  • Electronic circuit power control

 

Specifications

  • Channels: 1
  • Operating Voltage: 5V DC
  • Trigger Type: Active-low
  • Trigger Current: 50–60mA
  • Quiescent Current: 2mA
  • Maximum Contact Voltage: 250VAC / 30VDC
  • Maximum Contact Current: 10A
  • Relay Contacts: NO, NC, COM
  • Dimensions: Approximately 41 x 16 x 16mm
  • Weight: Approximately 12g

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