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4-Channel 5V Relay Module with High/Low Trigger

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4-Channel 5V Relay Module with High/Low Trigger

Brand NZN Electronics CLICK IT SKU CLICK-IT-240490 Category Components

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  • Brand NZN Electronics

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Overview

A 4-channel relay board that lets an Arduino or other 5V controller switch four separate circuits on and off independently. Each relay handles up to 10A at 250VAC, jumpers set whether the inputs switch on with a high or low signal, and every input goes through an optocoupler.

Using a 3.3V board such as an ESP32 or Pico? This board needs a 5V supply; see the FAQ below, or use the 1-Channel 3.3V Relay Module for a single circuit.

Specifications

Supply5V DC on DC+ and DC-
Channels4, independently controlled
Load limit, AC10A at 250VAC, 10A at 125VAC per channel
Load limit, DC10A at 30VDC per channel
ContactsSPDT per channel: COM, NO and NC
TriggerHigh or low, set by jumper
Trigger voltageHigh 3-5V, low 0-1.5V
Input current2-4mA per input
PCB size73 x 50 mm

Datasheets

Full technical datasheetPDF

What’s in the box

1×
4-Channel 5V Relay Module with High/Low Trigger

Assembled board with screw terminals fitted.

Great for

Four-zone garden watering from an Arduino
Switching lights, fans and pumps from one controller
Home automation and control-panel builds

Wiring & getting started

  1. Set the triggers

    With power off, move each channel’s jumper to H to switch that relay on with a high signal, or to L to switch it on with a low signal.

  2. Power and signal

    Connect 5V DC to DC+ and DC-. Join DC- to your controller’s ground and connect one output pin to each IN terminal you use (IN1 to IN4). Power the board from a 5V rail that can run all the relays at once, not from a GPIO pin.

  3. Test each channel

    With nothing on the contacts, switch each input in turn. That relay should click and its indicator light, and its COM should connect to NO. When released, COM connects to NC.

  4. Connect the loads

    Turn everything off. Run each load circuit through its channel’s COM and NO to switch it on when triggered, or COM and NC to switch it off when triggered. Stay within the load limits on every channel.

Note: Mains voltage can kill. Only wire mains loads if you are competent to do so, fully enclose the board so no terminal or solder joint can be touched, and follow NZ electrical safety rules. Motors and lamps draw a surge at switch-on, so leave margin below the limits.

Specification

Specification for 4-Channel 5V Relay Module with High/Low Trigger
CLICK IT SKU CLICK-IT-240490
Brand NZN Electronics

Features

A 4-channel relay board that lets an Arduino or other 5V controller switch four separate circuits on and off independently. Each relay handles up to 10A at 250VAC, jumpers set whether the inputs switch on with a high or low signal, and every input goes…

  • Brand NZN Electronics

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