Wireless pump connection

[JohnMo]

Not sure if this is the correct section?

 

I have a central heating pump started by a flow switch. But want to start a second pump about 10m away with no wires between and a very difficult route.

 

Looking for a wireless way to connect the second pump (pump has main power next to it).  Or more precisely tell it to start when the first pump starts, without a wire between the pumps.

 

Though about a pair of Shelly relays, but not sure how to go about it or if there is anything else I can use.  Don't want to rely on having internet, unless I have to.

[TonyT]

https://salus-controls.com/uk/
 

 

they do a switch that should fit the bill

[TonyT]

It’s the rf mains switch in the accessories section

[JohnMo]

Great, thanks

[Wil]

Pair of Shelly 1’s would do fine- one switches on via the flow switch, sends a signal directly to the other and it starts.

[MJNewton]

I did something similar with a pair of Shelly 1's. In my case it was to connect a wired-only central heating controller and a remote zone valve powering the pump and boiler heat demand input. I had to fit an RC snubber across the 'receiver' Shelly output otherwise it would sometimes reset on triggering. I bought this seperately but I think Allterco sell them alongside the Shelly now. 

Edited July 6, 2022 by MJNewton

[Wil]

Yes, well worth mentioning the snubber as I’ve had problems with low voltages keeping the input of shellies live and them not switching off.

 

I’ve used a 330kOhm resistor successfully in places from advice on other forums.

Edited July 7, 2022 by Wil

[Carrerahill]

15 hours ago, Wil said:

Pair of Shelly 1’s would do fine- one switches on via the flow switch, sends a signal directly to the other and it starts.

You beat me to it.

 

I second this. 

[JohnMo]

I ended up with

 

https://www.rfsolutions.co.uk/remote-control-systems-c9/mainslink-remote-control-systems-c25

 

10 mins to install, no issues