On Thu, 08 Jan 2015 19:23:05 +0000, ss wrote:

Rating: 15A AC250V
Withstand Voltage: AC1,0000V 1 Minute
Insulation Resistance: 100M O DC500V
Contact Resistance: 100mO
Soldering Temperatu 250°C Max 3 sec.

I want a micro switch that I will connect to a battery operated buzzer
that will sound when a door is opened. I dont understand the technical
aspects of electrics but would something like the above work ok off say
a couple of AA batteries.


Maybe.
Incidentally this is a reed switch, a microswitch is something
different.
The problem with using this in the application you describe is that
the switch is normally closed when the magnet is near, that is when
the door is closed in the normal configuration.
So the buzzer will sound when the door is closed and stop when the
door is opened, the opposite of what you want I think.

You could use a transistor or a relay to make it work correctly, but
that might be a hassle for you.

The traditional shop door switch is this
http://www.ebay.co.uk/itm/FRIEDLAND-...em4 d024aebe6

That will do what you want as long as you just need a burst of ringing
when the door is opened.



--

Graham.

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