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Relays

Control high-power electrical loads safely with our relay modules for Arduino, Raspberry Pi, ESP32, and industrial automation. All modules feature optocoupler isolation to protect your circuits from voltage spikes.

Browse by voltage: 5V relay modules for direct microcontroller interfacing, or 12V relay modules for automotive and industrial applications. Available in 1 to 16 channel configurations, each relay switches up to 10A at AC 250V or DC 30V.

Specialized Collections

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  • XH-M609 low voltage disconnect protection module, designed to protect batteries from over-discharge, supporting a 12-36V input range with adjustable cutoff settings XH-M609 12-36V Low Voltage Disconnect Protection Module
    Sold out

    XH-M609 12-36V Low Voltage Disconnect Protection Module

    $5.20 AUD
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  • DC 5V/12V/24V ON OFF Module Infinite Loop Cycle Delay Relay Timer DC 5V/12V/24V ON OFF Module Infinite Loop Cycle Delay Relay Timer

    12V DC ON OFF Module Infinite Loop Cycle Delay Relay Timer

    In stock
    $6.50 AUD
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  • 5V 1 Channel Relay Module Optocoupler 10A 5V 1 Channel Relay Module Optocoupler 10A

    5V 1 Channel Relay Module - High/Low Level Trigger

    In stock
    $2.95 AUD
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  • 6-30V Time Relay Module Switch Trigger Timer Cycle 6-30V Time Relay Module Switch Trigger Timer Cycle
    Sold out

    6-30V Time Relay Module Switch Trigger Timer Cycle

    $10.50 AUD
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  • 12V 1 Channel Relay Module Optocoupler 10A 12V 1 Channel Relay Module Optocoupler 10A

    12V 1 Channel Relay Module Optocoupler 10A

    In stock
    $3.10 AUD
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  • 5V 2 Channel Relay Module Optocoupler 10A 5V 2 Channel Relay Module Optocoupler 10A

    12V 2 Channel Relay Module Optocoupler 10A

    In stock
    $3.90 AUD
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  • 5V 2 Channel Relay Module Optocoupler 10A 5V 2 Channel Relay Module Optocoupler 10A

    5V 2 Channel Relay Module Optocoupler 10A

    In stock
    $3.90 AUD
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  • DC 5V/12V/24V ON OFF Module Infinite Loop Cycle Delay Relay Timer DC 5V/12V/24V ON OFF Module Infinite Loop Cycle Delay Relay Timer

    24V DC ON OFF Module Infinite Loop Cycle Delay Relay Timer

    In stock
    $6.50 AUD
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  • 5V 4 Channel Relay Module Optocoupler 10A 5V 4 Channel Relay Module Optocoupler 10A

    12V 4 Channel Relay Module Optocoupler 10A

    In stock
    $6.00 AUD
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  • 5V 8 Channel Relay Module Optocoupler 10A 5V 8 Channel Relay Module Optocoupler 10A

    12V 8 Channel Relay Module Optocoupler 10A

    In stock
    $11.50 AUD
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  • DC 5V/12V/24V ON OFF Module Infinite Loop Cycle Delay Relay Timer DC 5V/12V/24V ON OFF Module Infinite Loop Cycle Delay Relay Timer

    5V DC ON OFF Module Infinite Loop Cycle Delay Relay Timer

    In stock
    $5.20 AUD
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  • 5V Programmable Timer Relay 1-168 Hours (1 week max) 5V Programmable Timer Relay 1-168 Hours (1 week max)

    12V Programmable Timer Relay 1-168 Hours (1 week max)

    In stock
    $13.50 AUD
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  • XH-M131 Detection Sensor Photoresistor Relay Module XH-M131 Detection Sensor Photoresistor Relay Module
    Sold out

    5V XH-M131 Detection Sensor Photoresistor Relay Module

    $11.00 AUD
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  • 5V 4 Channel Relay Module Optocoupler 10A 5V 4 Channel Relay Module Optocoupler 10A

    5V 4 Channel Relay Module Optocoupler 10A

    In stock
    $6.00 AUD
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  • Wireless Smart Switch DC 5V-12V Home Relay Module Self-locking Wifi Wireless Smart Switch DC 5V-12V Home Relay Module Self-locking Wifi

    Wireless Smart Switch Relay DC Home Module Self-locking Wifi

    In stock
    $17.75 AUD
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  • XH-M131 Detection Sensor Photoresistor Relay Module XH-M131 Detection Sensor Photoresistor Relay Module

    12V XH-M131 Detection Sensor Photoresistor Relay Module

    In stock
    $11.00 AUD
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  • 5V 12V 16 Channel Relay Module Optocoupler 10A 5V 12V 16 Channel Relay Module Optocoupler 10A

    5V 16 Channel Relay Module Optocoupler 10A

    In stock
    $15.60 AUD
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  • Automotive Relay Base Automotive Relay Base

    Automotive Relay Base

    In stock
    $5.50 AUD
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  • 5V Programmable Timer Relay 1-168 Hours (1 week max) 5V Programmable Timer Relay 1-168 Hours (1 week max)

    24V Programmable Timer Relay 1-168 Hours (1 week max)

    In stock
    $13.50 AUD
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  • 5V 8 Channel Relay Module Optocoupler 10A 5V 8 Channel Relay Module Optocoupler 10A

    5V 8 Channel Relay Module Optocoupler 10A

    In stock
    $9.50 AUD
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  • 5V 12V 16 Channel Relay Module Optocoupler 10A 5V 12V 16 Channel Relay Module Optocoupler 10A

    12V 16 Channel Relay Module Optocoupler 10A

    In stock
    $15.60 AUD
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  • 4-Pin Automotive Relay SPDT - 12V 40A 4-Pin Automotive Relay SPDT - 12V 40A

    4-Pin Automotive Relay SPDT - 12V 40A

    In stock
    $6.50 AUD
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  • 5V 3 Channel Relay Module Raspberry Pi HAT 5V 3 Channel Relay Module Raspberry Pi HAT
    Sold out

    5V 3 Channel Relay Module Raspberry Pi HAT

    $27.80 AUD
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  • 5V Programmable Timer Relay 1-168 Hours (1 week max) 5V Programmable Timer Relay 1-168 Hours (1 week max)

    5V Programmable Timer Relay 1-168 Hours (1 week max)

    In stock
    $13.50 AUD
    View details
  • ESP8266 5V WiFi Smart Relay Module with ESP-01S ESP8266 5V WiFi Smart Relay Module with ESP-01S

    ESP8266 5V WiFi Smart Relay Module with ESP-01S

    In stock
    $9.40 AUD
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  • 8-Channel Ethernet Relay Module, PoE, Modbus RTU/TCP, Opto-Isolated Protection Waveshare 8-Channel Ethernet Relay Module, PoE, Modbus RTU/TCP, Opto-Isolated Protection Waveshare

    8-Channel Ethernet Relay Module, PoE, Modbus RTU/TCP, Opto-Isolated Protection

    Very low stock (1 unit)
    $62.00 AUD
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  • Raspberry Pi 8 Channel Relay Expansion Board Waveshare Raspberry Pi 8 Channel Relay Expansion Board Waveshare

    Raspberry Pi 8 Channel Relay Expansion Board

    Very low stock (2 units)
    $29.40 AUD
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  • 4-Pin Fused Automotive Relay SPDT - 12V 30A 4-Pin Fused Automotive Relay SPDT - 12V 30A

    4-Pin Fused Automotive Relay SPDT - 12V 30A

    In stock
    $8.50 AUD
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  • Quick Dispatch

    All orders shipped within 1-2 business days

  • Delivered from Melbourne

    Fast and reliable shipping

  • Pickup Available

    Email us at support@zaitronics.com.au to arrange pickup from Melbourne, Australia
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