Mains Switch Relay for the Raspberry Pi and Arduino
The Mains Switch Relay is supplied ready built and tested without an enclosure. It
is for use by competent persons in a suitable enclosure. This device allows the user
to switch 230V or 110V mains ON and OFF to mains powered devices from micro-controllers
like the PIC and the Arduino or from single board computers like the Raspberry Pi
and the Beaglebone. All the safety requirements are designed-in to prevent any faults
resulting in a fire.
* Electrical isolation between the control side and the mains voltage - the tracks
are kept separate on the PCB
* Protected by a 5A fuse in the product - to protect the PCB tracks from overheating
if there is a fault with the load
* LED indication of ON and OFF states
* Detachable input connector
* Can be configured for most parts of the world by using a suitable mains extension
lead (not supplied)
Mains Switch Relay - Applications
There are many applications that require switching mains powered appliances ON and
OFF. Here are some examples.
Maintaining an environment at a constant temperature:
A temperature measuring device and the Mains Switch Widget with a heater could be
used in a feedback control system to maintain a constant temperature.
Keeping a water tank topped up:
A water level detector can be used to control a pump using the Mains Switch Widget
to maintain constant water level in a tank.
As a module in a Home Automation system:
A Raspberry Pi could be used to switch lights, heating and ventilation using this
product. With a browser interface, this could be controlled from anywhere in the