Relay Modules in Australia

Shop relay modules from AuscomTech. We stock practical relay boards for Arduino, ESP32, ESP8266, Raspberry Pi compatible boards and general electronics projects, including 1 channel, 2 channel, 4 channel, 8 channel and 16 channel relay modules depending on current availability.

Whether you are switching a load from a microcontroller, building an automation project, controlling lights, activating a solenoid, creating a timer circuit or adding relay outputs to a control project, relay modules provide a simple way to switch external circuits from low-voltage electronics.

Shop Relay Modules by Type

Our relay module range may include products such as:

• 1 Channel Relay Modules: Single relay boards for simple switching projects and microcontroller-controlled outputs.
• 2 Channel Relay Modules: Dual relay boards for controlling two separate outputs from Arduino, ESP32 or other controller boards.
• 4 Channel Relay Modules: Multi-output relay boards for automation, control projects and switching multiple loads.
• 8 Channel & 16 Channel Relay Modules: Larger multi-channel relay boards for projects that need several switched outputs from one controller.
• Optocoupler Relay Modules: Relay boards with optocoupler-style input circuitry depending on the module design.
• Microcontroller Relay Boards: Relay modules designed for use with Arduino compatible boards, ESP32, ESP8266, Raspberry Pi compatible boards and other controller projects.

Relay Modules for Arduino, ESP32 & Electronics Projects

Relay modules are commonly used when a low-voltage control signal needs to switch a separate load. They are useful for automation projects, sensor-triggered outputs, timers, lighting control, access control, test rigs, solenoids, motors and general electronics switching applications.

Many relay modules are designed to be controlled from microcontroller GPIO pins, but the required trigger voltage and wiring can vary. Always check the relay coil voltage, trigger voltage, contact rating, contact type, jumper settings, isolation, wiring diagram and load type before use.

1 Channel, 2 Channel, 4 Channel, 8 Channel & 16 Channel Relay Boards

Single-channel relay modules are useful for simple projects with one switched output. Multi-channel relay modules make it easier to control several outputs from one microcontroller, such as multiple lights, valves, motors, buzzers, solenoids or control signals.

4 channel, 8 channel and 16 channel relay modules are commonly used where a project needs multiple switched outputs from a single controller board. These larger relay boards can be useful for automation panels, test rigs, control projects, lighting projects, alarm outputs and microcontroller-based switching systems.

For MOSFET switching and DC load control, browse our MOSFET and transistor switch modules category. For industrial DIN rail relays and interface relays, browse our DIN rail relays and interface relays category.

Why Buy Relay Modules from AuscomTech?

• Australian stock: Products are shipped from Australia using Australia Post.
• Practical product range: We stock useful relay boards for electronics projects, automation, repairs and prototyping.
• Secure online checkout: Order online using supported secure payment options.
• Helpful support: Need help choosing a relay module? Contact AuscomTech and we’ll help where we can.

Browse Relay Modules Online

Explore our range of relay modules in Australia, including 1 channel relay modules, 2 channel relay modules, 4 channel relay boards, 8 channel relay boards, 16 channel relay modules, optocoupler relay modules and microcontroller relay boards depending on current availability. You can also browse related categories such as relays, switching and motor control, power and battery modules and microcontrollers and development boards.

Frequently Asked Questions

Do you sell relay modules for Arduino and ESP32?

Yes. AuscomTech stocks relay modules suitable for Arduino compatible boards, ESP32, ESP8266, Raspberry Pi compatible boards and general electronics projects depending on current availability.

What is a relay module used for?

A relay module is used to switch a separate electrical load from a low-voltage control signal. Relay modules are commonly used in automation, timers, sensor-triggered outputs and control projects.

What is the difference between a 1 channel and 16 channel relay module?

A 1 channel relay module controls one output. Multi-channel relay modules such as 4, 8 and 16 channel relay boards can control several separate outputs from one controller board.

Can relay modules switch mains voltage?

Some relay modules have contacts rated for mains voltage, but mains wiring is dangerous and should only be carried out by suitably qualified people. Always check the relay rating and safety requirements before use.

What should I check before buying a relay module?

Check the relay coil voltage, trigger voltage, contact rating, number of channels, input logic, jumper settings, isolation, load type and wiring diagram before choosing a relay module.

Can you help me choose the right relay module?

Yes. If you are unsure which relay module suits your project, contact AuscomTech with your controller board, supply voltage, load voltage, load current and what you need to switch.