Grundfos pump temperature sensor

[desktop987456]

Hi, Where can I get a temperature sensor attachment for the attached grundfos pump and what does it do?

Thanks

 

[Johntheo5]

That's looks like a low head HW cylinder recirc pump to ensure hot water arrives quickly at all the HW users, but don't know if it needs a adaptor to see and read the set HW remperature to stop/restart the pump when required recirc HW temp is reached.

 

[desktop987456]

it needs a adaptor to see and read the set HW remperature

I have bought the pump on ebay, it is missing the sensor attachment. I think it does as there is pipe sensor that operates the pump on preset values for HW but wasn't sure hence the question. where can I get the pipe sensor attachment that goes with the pump?