Force of a 12V push-pull electromagnet switch

[Darwinian]

Glad to see you around Dar. Cant help much with with the question tough. Are you making a pinball machine or something? I restored one, I have some knowledge on the EM thinguies (name in english?) That actuate on flippers or bumpers. I dont think they called switches.

I'm making a 'Stay out of my room you bloody cats' device.  I already have a motion sensor that I modified but at the moment it's rigged up to a couple of hair dryers that blast air at them, and they are getting a bit blasé about that. It's also very noisy.

With the electromagnet I can rig up something that will spay some air freshener in their direction once they cross the threshold. They really hate air freshener and I doubt they will ever get used to it.

I've told them. All these rooms are yours except mine, attempt no incursion there. But they don't listen.