Current sensor - to detect 240VAC pump on

[MattD]

I'm sure there is a simple answer to this - how can I detect in Domoticz whether a pump controlled elsewhere is on or off? (or I guess any other AC powered device).

I have a solar heating system for which I am using Domoticz on RPi as secondary monitoring (with a long term plan to connect Resol Deltasol thermal controller direct to domoticz but it's not that easy) - using 1-wire temperature sensors.

What I would like to know is when the 240v circulation pumps are switched on by the solar controller - I would rather that this is an electrically isolated mechanism rather than taking any direct feed from their circuitry to the RPi. I have no interest in the level of current flowing or power being consumed - just whether the pumps are on or off when the sensor is polled.

Is there some kind of simple hall effect sensor board which can be relatively easily connected to RPi/Domoticz ? They are physically close to each other.

[FireWizard]

Hi,

What about a Sonoff POW R2?. It does a little bit more than you asked for, but that should not be a problem. Flash it with Tasmota.

Regards

[aleph0]

I know you excluded it explicitly, but just in case... I'm using that stuff https://www.aliexpress.com/item/3280974 ... 2e0eVhVncD for the same purpose (detecting the run of a pump), it's been working fine for years now.