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From: maddog@oneb.wimsey.bc.ca
Newsgroups: sci.electronics
Subject: Burglar alarm on an electronic thermometer.
Keywords: BURGLAR ALARM - THERMOMETER
Message-ID: <g3k4Z3w163w@oneb.wimsey.bc.ca>
Date: 8 Apr 91 18:26:15 GMT
Distribution: sci.electronics,sci.med.technology
Organization: 1B Systems Management Limited, Nanaimo, B.C.
Lines: 16

QUESTION - How does it work ?

PROBLEM  - We recently obtained the IVAC Temp-Plus II electronic
           thermometers.
           They have an alarm which sounds off if the thermometer
           is not returned to its wall mounted case within one
           hour of a previously set time period.Its function is 
           also crippled at this point in time.
           There appear to be no external connections between the 
           thermometer and the case.
           I can see in the base of the case what appears to be
           a 2 cm long piece of metal embedded in the plastic.
QUESTION - Could there be some sort of magnetic induction switch 
           functioning here ?

Thanks from the curious but ignorant.