Use a dumb siren plus smart plug with STHM?

that one shows $35 so why not just get the monoprice $24.

I can go to the local hardware and get this one in the morning. also the link you sent me shows out of stock

About the only thing you donā€™t seem to have mentioned is setting the alarm attribute. So e.g.

def siren()
{
    sendEvent( name: 'alarm', value: 'siren' )
    return on()
}

Not forgetting one will be needed in the off().

I donā€™t know if that would make any difference.

ok so i was told on this thread i could do what i was trying to do because zigbeeā€¦i figured it was possible but i was at a dead end as to what i was missing. perhaps this is it. Ill try it. thanks.

hmm well now i canā€™t get it to create the device handler with or without that part you added. im so confused lol