On 2/7/2009 3:32 AM Terry Pinnell spake thus:

Can anyone point me towards a UK source (phone or online) for an
inexpensive cylindrical, enclosed reed switch, N/C, for use in a
burglar alarm circuit please.

I'm still googling but so far without success and want to place an
order for delivery Monday.

Sorry, I can't help, being in the US where things like this are
trivially easy to get.

Just one thing: did someone here say that switches like this were
typically N/O rather than N/C? And that such could be used for an alarm
circuit?

Think about it: if you have a N/O switch as an alarm sensor, all the bad
guy has to do to get in is to cut it out of the circuit. There's a
reason alarm switches are normally closed.

Hard to believe a N/C reed switch wouldn't be easy to buy somewhere in
England.


--
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"If this stuff worked, you wouldn't need me".

- lifted from sci.electronics.repair