Relays

Relay modules
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The PiOT relay board allows you to bond a GPIO pin to a relay with the touch of a button.
R449.00  Inc VAT
Eight channel 5V DC Relay Module (2A3 8 channel relay)

Product information
This is an eight channel 5V DC relay module with active low. It can be controlled by variety of microcontrollers such as Arduino, Raspberry Pi, PIC, DSP, AVR or ARM etc.

Has the ability to control eight separate appliances or pieces of equipment
Eight on-board optoisolators enable direct interfacing to microcontrollers
Eight red LED status lights on-board show relay activity
Widely used in PLC control or smart home control
4 x M3 mounting holes for easy fixing via standoffs

Specifications
15-20mA drive current needed per channel
Relay coil maximum operating voltage: 5V
Relay coil maximum current: 89.3mA
Relay contact maximum: AC250V at 10A or DC30V at 10A
No. of relays/channels: 8
Item size: 134 x 55 x 20mm
Item weight: 116g

Package Includes
1 x 8 Channel Relay Module

Warning
Exercise proper caution when connecting mains driven equipment or appliances to relay module as lethal current will be present.

R149.00  Inc VAT
Four channel 5V DC Relay Module (2A3 4 channel relay)
Use this relay board with your Arduino, Raspberry Pi or your custom micro-controller projects!
  • Each Relay has LED indication when ON
  • SPDT Relays with terminal block outputs.
  • Relay Coil voltage: 5 VDC
  • Power Requirement: 5 VDC
R79.00  Inc VAT
ModMyPi PiOT Relay Board (2A3 MMP PiOT relay)

Raspberry Pi board not included

The ModMyPi PiOT (Pi of Things) relay board is smart! Not quite Skynet smart, so you can tell John Connor to stay at home and play with his Raspberry Pi. But it's much smarter than your average relay board! We've created a Raspberry Pi Relay Board that does away with the complicated wiring and fiddly jumper configuration of your standard relay board, and bundles that control into an on-board PIC, making configuration faster, easier and safer. The PiOT relay board can be connected directly on top of the Pi, or via a GPIO ribbon cable (not included), and also features mounting points for the Raspberry Pi Zero. Each is board is fully assembled, and ready to plug and play! We also stock cases for the Raspberry Pi B+/2/3 & Raspberry Pi Zero.

The PiOT relay board allows you to bond a GPIO pin to a relay with the touch of a button. No need to tie pins using resistors, and no need to re-wire the circuit when you want to change which GPIO pin fires which relay. Simply select your GPIO pin using the on-board tactile buttons and two-digit 7-segment display, and switch that pin high or low to fire your designated relay!

The on-board display can be configured to show the Pi's BCM or Pin number system for GPIO/relay bonding, and also demonstrates visual feedback of the relay on/off status for easy monitoring. The display can also be used to test relays before configuring them with your Pi, in addition to providing menu access for setting configuration.

The PiOT relay board also features multiple innovative start-up modes designed to combat "chatter" on the GPIO which can lead to unexpected behavior. Variable delayed start-up allows users to pause activation of the relays for a short period during boot, ensuring that GPIO pins are correctly set prior to use, or the alternative handshake mode utilises a specific pulse train to enable activation and de-activation of the relay board at the user's will. No more accidental switching of relays at boot!

The PiOT relay board uses low current (~100mA) PWM (pulse width modulation) to significantly reduce the current required to hold the relays on when compared to other relay boards. This means that relay boards can be stacked up to 5 high without requiring additional external power.

Warning! Relays can be used to switch large voltages and currents. Please, please, please be careful when undertaking any work with this type of power - it can kill!

The ModMyPi PiOT Relay Board Features:

  • 4 x OMRON G5LA-1 Relays for Switching up to 10A @ 250VAC, or 10A @ 24VDC
  • 4 x Tactile Buttons for GPIO/Relay Bonding
  • Two-Digit 7 Segment Display for Visual Feedback & Setting Control
  • Micro-controlled GPIO/Relay Setting & Switching (No Jumpers Required!)
  • 40 Point Raspberry Pi GPIO Modelled Input
  • 5V & 3.3V Input Compatible
  • Low Holding Current via PWM ~ 100mA per Relay Board
  • Stackable Relay Board (Up to 5 Without External Power)
  • Multiple Start-Up Modes to Negate Boot GPIO Chatter (Delayed/Handshake)
  • Pi Zero Mounting Points

Tutorials

ModMyPi PiOT Relay Board Wiki

Example Code

Downloads

OMRON G5LA-1 Datasheet

45K22 PIC Datasheet

Video

Review and Introduction by Garage Tech Tips:

The PiOT relay board allows you to bond a GPIO pin to a relay with the touch of a button.
R449.00  Inc VAT
WS Waveshare RPi 3xRelay Board (2A3 WS 3 relay board)

Please note: Raspberry Pi not included

Overview

The RPi Relay Board gives your Pi the ability to control high voltage/high current devices, easily makes normal home appliances become intelligent.

RPi Relay Board Features

  • Supports Raspberry Pi A+/B+/2B/3B
  • High quality relays, loads up to 250VAC/5A, 30VDC/5A
  • Photo coupling isolation, prevent interference from high voltage circuit
  • Onboard LEDs for indicating relays status
  • Relay control jumper, allows to control the relays by custom pins other than the default pins
  • Comes with development resources, including examples in wiringPi, WebioPi, shell, python, and bcm2835

What's on the RPi Relay Board


  1. Raspberry Pi GPIO interface: for connecting Raspberry Pi
  2. Relay screw terminal: for connecting target devices
  3. Relays
  4. Photocoupler: PC817
  5. Relay indicator
    • LED on: relay NC is opened, NO is closed
    • LED off: relay NC is closed, NO is opened
  6. Power indicator
  7. Relay control jumper
    • short the jumper: control the relays by default I/Os used in the example code
    • open the jumper: control the relays by custom I/Os through jumper wires

Development Resources

Wiki : www.waveshare.com/wiki/RPi_Relay_Board

Package Includes:

  1. RPi Relay Board x 1
  2. RPi screws pack (2pcs) x 1
R239.00  Inc VAT
Two Channel 5V DC Relay Module (2A3 2Two channel relay)

Product information
This is a two channel 5V DC relay module with active low. It can be controlled by variety of microcontrollers such as Arduino, Raspberry Pi, PIC, DSP, AVR or ARM etc.

Has the ability to control two separate appliances or pieces of equipment
Two on-board optoisolators enable direct interfacing to microcontrollers.
Two red LED status lights on-board show relay activity.
Widely used in PLC control or smart home control
4 x M3 mounting holes for easy fixing via standoffs

Specifications
15-20mA drive current needed per channel
Relay coil maximum operating voltage: 5V
Relay coil maximum current: 89.3mA
Relay contact maximum:  AC250V at 10A or DC30V at 10A
No. of relays/channels: 2
Item size: 57 x 55 x 20mm
Item weight: 57g

Package includes
1 x 2 Channel Relay Module

Warning
Exercise proper caution when connecting mains driven equipment or appliances to relay module as lethal current will be present.

R39.90  Inc VAT
5V 4 Channel SSR G3MB-202P Solid State Relay Low level Trigger Module (2A3 solid relay 4 blackblue)
Specifications:

5V solid state relays 240V 2A, output with restive fuse 240V 2A.
2.54cm pin and blue KF301 terminals to control line is more convenient.
Input power supply: 5V DC (160MA)
Input control signal voltage: 0-2.5V low state relay OFF; 3.3-5V high state relay ON
Size: 57 x 55 x 20 mm(L x W x H)

Unlike the mechanical relays - these channels need to connect to ground to trigger

Module interface:

DC +: positive power supply (power supply voltage for relay)
DC -: negative
CH1: relay module 1 signal trigger
CH2: relay module 2 signal trigger
CH3: relay module 3 signal trigger
CH4: relay module 4 signal trigger

Package includes:

1 x 5V 4 Channel Solid State Relay Module










R189.00  Inc VAT
5V 1 Channel SSR 202P Solid State Relay Module (2A3 Solid state relay 1 blue/black)
Features:

1. 5V solid state relay 240V 2A, output with resistive fuse 240V 2A.
2. Size: 25 x 34 x 25mm (L x W x H)
3. Input power supply: 5V DC (160MA)
4. Input control signal voltage:
(0-1.5V low state relays ON)
(2.5-5V state high relay OFF)
5. Blue KF301 terminals to the control line is more convenient.

Specifications:

Input section:
DC +: Positive power supply (according to the relay voltage supply)
DC -: Negative one
CH: Relay Modular Signal triggering end (low trigger active)
Voltage version: 5V
Quiescent current: 0mA
Working current: 12.5m
Trigger voltage: 0-1.5V
Trigger current: 2mA

Note:

Power supply of module: must use DC voltage and match to the relay voltage
Unlike the mechanical relays - these channels need to connect to ground to trigger

Package includes:

1 x 5v 1 channel relay module






R99.00  Inc VAT
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