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It was working fine, then random beeps that weren't cured with a new battery. Think I can get it repaired?
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No you do not repair these. Your fire department can help you. Replace only.
That is the dinner bell at my house.
Montgomery Ward was the first credit/charge card my wife and I ever had. We got it when we needed to finance a new water heater in our first home back in the early 80's. Tough times, but good times.
Every large shopping mall, at least in Minnesota, had a Montgomery Ward store as one of their anchor stores. We did a lot of shopping there, even without the credit card.
We have 2 wired smoke detectors, one on each level, and a battery detector in every bedroom. We also have 4 CO detectors strategically placed. None of those detectors last forever, and replacing isn't all that expensive.
I'm betting there may be some collectors out there looking for MW branded stuff.
Ionization-type smoke alarms have a small amount of radioactive material between two electrically charged plates, which ionizes the air and causes current to flow between the plates. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm. (From NFPA.org)
The radioactive material ages, and thus the smoke alarm's effectiveness fades with time.