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Article #2492How do electronic hotel door locks work?
From: abs
Date: Mon, 02 Feb 1987 17:45
Date: Mon, 02 Feb 1987 17:45
15 lines
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1104 bytes
I've been wondering for a while about those card-keyed door locks that you find in newer hotels. I have three questions: 1) How are they powered? (I can find no evidence of wires running to the door itself.) 2) What is the means by which they are reprogrammed? Is it done using RF? Carrier current? Microwaves? 3) If they are battery powered, what kind of batteries are used, how often must they be replaced, and how does one open the lock to replace the batteries? -- Andrew Siegel, N2CN NBC Computer Imaging, New York, NY philabs!nbc1!abs (212)664-5776
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!rutgers!sri-spam!ames!ucbcad!ucbvax!decvax!decwrl!pyramid!prls!philabs!nbc1!abs From: abs@nbc1.UUCP Newsgroups: misc.wanted,sci.electronics Subject: How do electronic hotel door locks work? Message-ID: <205@nbc1.UUCP> Date: Mon, 2-Feb-87 12:45:25 EST Article-I.D.: nbc1.205 Posted: Mon Feb 2 12:45:25 1987 Date-Received: Wed, 4-Feb-87 03:34:24 EST Organization: NBC Computer Imaging, New York, NY Lines: 15