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Clipsal smoke alarms
- 10-17-2007
October 17, 2007, 7:22 am

We have one -- the normal type that have a 9v battery and fit to the
ceiling. It started beeping intermittently (and loudly) so investigated.
"Old" battery showed 9.4 v dropping to 8.9 v when loaded with 750K (giving
approx 20 mA load - probably much too high). Replaced battery with new
Duracell which gave 9.7 v dropping to 9.6 on load. No beeps now. I wouldn't
have thought the inbuilt low battery alarm was so sensitive. Any comments?

Re: Clipsal smoke alarms

**I decided to fit some mains powered smoke alarms in my last home. I chose
some fairly expensive ones, which had a battery back up. After climbing
ladders to get into the ceiling space at 2AM to disconnect the power
(twice), I decided to switch to another brand. I spoke to the guy at the
electrical wholesale outlet (Turks) and asked which model was the most
reliable. I've been happy and false alarm free for several years.
Go ask the guy at the electrical wholesale outlet nearest you. They know
which models are the least troublesome. Buying smoke alarms from K-Mart (or
other, similar outlets) is the worst place to buy them.
BTW: Photo-electric is generally regarded as best for normal situations.
They're usually more expensive.
Trevor Wilson

Re: Clipsal smoke alarms

Yes, that was our problem but fortunately, I can swing down the unit from
within the house, which disconnects if (the unit) from the mains, and then
on removing the battery there are just a few shrieks as the capacitor
discharges, and then peace.
There's nothing quite so disruptive at 2 am than a beeping smoke alarm
(except possibly a smokelogged house -- hence I don't want to disable it).
Does seem however that some models are unduly sensitive to very small
battery ageing.
All Ok now with new Duracell.

Re: Clipsal smoke alarms
keyboard and composed:

Assuming you mean 750 ohms, then I've had similar experiences with
various smoke alarms. However, instead of discarding my "flat"
batteries, I've used them in my multimeter.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Please remove one 'i' from my address when replying by email.

Re: Clipsal smoke alarms
On Mon, 22 Oct 2007 16:21:21 +1000, Franc Zabkar

I just had an Eveready "Super Heavy Duty" battery go flat in a $5
smoke alarm. It measured 7.7V on no load and it overranged (> 100
ohms) on Bob Parker's ESR meter.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Please remove one 'i' from my address when replying by email.
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