Not familiar with selfmon, but from reading their docs I'd suggest you need to add the panels as MQTT Alarm Control panel and the detectors as room presence. Obviously if you don't want the panel, you don't need that.
Doesn't look like the IO module uses an MQTT schema home assistant can autodiscover, but check you've not got a notification prompting you to set it up as that will save you a load of aggravation.
Have you got an MQTT broker running? (e.g. Mosquito as an add-on if you're running HassIO, slightly more fiddly if you've got a different setup)
Just checked my instance and you'll need to configure these in the configuration yaml which can be a.. headache. Happy to try and help if you get stuck with this.
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