Its cool isnt it,i get them every year.have since my kids were young
they replace old battery's test the alarms etc
gives you that peace of mind knowing everythings working as it should.
Apparently you can't change the batteries on these ones, but they last for ten years.
I was walking past the fire station this afternoon and all the alarms started going off and firemen started running towards me to get into their truck
it was pretty cool, I've never witnessed it before
I've never seen that happen Every time I drive past a fire station I hope the lights will start flashing and I'll have to stop.