Should I get double pane glass windows or add insulation to attic? I live in a one-story, built in 1988, concrete block home in hot dry climate- (100 degrees today) The attic insulation was the spray in kind. Attic is really only a crawl space.My windows are single pane and lot of people get these dualpane with sun block. I only have sunshades and they are old.
It sounds like it does have a battery backup in it though. And it's saying CHANGE ME NOW! As they all go off if you hit the test button, you might be right in that they are plugged in to the house electrical system and maybe have an interconnecting line between them. A connection to a main alarm panel would make the idea of individual battery backup unnecessary as that would supply all the power and backup in one place under steady charge. Avoid the rush and err on the side of safety. Call the electrician. These things are simple enough that a Radio Shack guy could do it. (Well maybe not now as they just sell cell phones.) But once the guy gets the lay of the land with your system, he can hook you up with a little 411 on how it works.
I'm not saying yes, but I will say I've seen it done a lot. The last large remodel I did two winters ago was warmed by a huge propane heater. We'd kick it on and start work, sometimes having to shut it off for a while because it got too warm. It was a two story remodel and we was working upstairs at the time and the heater was on the bottom floor. The building was vacant. Still is by the way. Slow going job. Anyway, again, I'm not saying do it. Just saying I've seen it done. If you want to feel better about things, get a co alarm. EDIT: We've worked around kerosene space heaters also. Loud things but they will keep the chill out of a building while you're working.
It sounds an alarm (usually a loud bell in the elevator shaft.) It also sends an alarm to the building management / security people. If they're listening, they can open an intercom to talk with you. It isn't a fire alarm. Elevators also have a fireman's key where they can take control of the cab, and also a sound-powered phone jack they can plug a handset into that works whether there's power or not.
The alarm button on the elevator runs an alarm bell either located on top of the car or inside the elevator shaft to alert people to the elevator in case of an emergency. Sometimes they can possibly wire up the alarm bell to another bell or something to alert someone directly, but in most cases, the button just sounds an alarm. The alarm is supposed to be hooked up to a battery circuit in case of power loss, so it will continue to work even though the power is out. However, the phone located inside the elevator is programmed to call someone that will answer 24hours a day, so in case of an elevator emergency , the person can get help.
