Mains Switch – RF Solution – Alternative to Cabling

  • No need to lift the floor to run a cable back from the Boiler to the Pump (Airing Cupboard)
  • No need to run a cable and conduit on the outside of the house
  • Cheap unit which will save significant time and money
  • Small and compact for easy and tight installations
  • 2x Free wall mounting kits included
£69.99 ex VAT
SKU: 852

Product Description

Mains Switch RF is a novel solution for connecting devices where live cabling is inconvenient or impossible. It’s a hassle-free alternative to running cables. Commonly used for pump overrun in the heating industry, Mains Switch can also be used as a solution for other internal switched live and cable replacement issues.

The package contains a transmitter and a receiver with convenient mounting brackets.

How does Mains Switch RF work?

The transmitter keeps looking for 230V AC input. When an input is detected, an RF “on” signal is transmitted to the receiver and repeated every 5 seconds. The transmitter keeps broadcasting pairing code every 5 seconds until 60 second timeout.

The receiver keeps listening for the RF on/off signal. The pump (or any other device) will switch on when an RF on signal is received.

Product Compliance

Mains Switch RF complies with the essential requirements and other relevant provisions of EU Directives 2014/53/EU and 2011/65/EU

Its RF communication is carried out over 868.0 – 868.6 MHz, <13dBm. It has a range of 100 meters in open space and 35 meters indoor depending on the layout.

Install with confidence: Mains Switch comes with a 5-year warranty!


In plumbing, Mains Switch is mainly used as a transmitter/receiver pairing for managing pump overrun where cabling is inconvenient. The RF device has many other applications. You can use it in various home and business situations where it’s important for two devices to communicate. There are plenty of applications in Smart Home environment and elsewhere.

Additional information


3 reviews for Mains Switch – RF Solution – Alternative to Cabling

Rated 5 out of 5

wish I found this product sooner! the days to running cables around a house for pump overrun are gone! highly recommended. well done Plumbbox

Rated 5 out of 5

I have used these now on 2 installations, they are small and neat. saved me running a new cable (which would have been outside in trucken) would highly recommend to all Worcester installers.

Rated 5 out of 5

mains switch RF really got me out of trouble on a Valiant boiler install as didn’t have enough core for the pump over run. I ordered it at 4PM and it was at the cusomters house the next day at 08.00 AM! customer called once she had it and I popped back in the evening, too 5 mins to install.
I have now brought 4 to keep on the van! cheers plumb box

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Click here to download the PDF file containing user manual and wiring scheme for Mains Switch RF.