Magnetic Latching relay? or not

[TomGeorge]

@francescoranchi

Hey Tom!
Yes I'm, aware I could o the job with an arduino or an ATTINY but I would prefer not to...

So you need a push-on/push-off button or latching button.

https://www.jaycar.com.au/spst-pushbutton-black-actuator-latching/p/SP0718

Tom...