Is it a law they have to be hardwired now, or can I purchase some with lithium batteries that last 10 years for a rental? I would have to pay an electrician to have them hardwired, and I don't want to pay all that extra charge if I don't need to. After I have the electrical updated someday, perhaps at that time would be a good time to hard wire them then, but if not really necessary I don't want to pay the cost of it. I've already been told it's going to be at least $10,000.00 to update the electrical in two units. Do smoke detectors have to be installed in the ceiling or can they be installed above a doorway. That's how they are in the house I live in, but they were that way when I moved here? Does one need to be installed in each bedroom or outside the bedroom? What about the living room? Thanks for any info.
Yes you can. My wife has a Sunfire with both power and manual locks. Go to a junk yard and pull the parts off the same model. Be careful with the wires, they can be a pain.
To keep smoke out of smoke detector, cover with plastic Tupperware bowl, and wedge a long broomstick between it and the floor. Remember this is only for test purposes only.