Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!ericom!eua.ericsson.se!erix.ericsson.se!mike From: mike@erix.ericsson.se (Mike Williams) Newsgroups: sci.electronics Subject: Re: Electronic Cat doors revisited Message-ID: <1991Feb20.072741.1050@eua.ericsson.se> Date: 20 Feb 91 07:27:41 GMT References: <7045@rsiatl.Dixie.Com> Sender: news@eua.ericsson.se Organization: Ellemtel Telecom Systems Labs, Stockholm, Sweden Lines: 26 In article <7045@rsiatl.Dixie.Com> jgd@rsiatl.UUCP (John G. DeArmond) writes: > >The unit is made in England and is called the StayWell 21. It is powered >by a wall tumor. It has a selector that allows one to control which >direction the cat is allowed to go automatically (in but not out, for >example.) > >The transmitter that attaches to the cat's collar is about 2/3's the >size of an EPROM and perhaps half as thick. It appeared to be powered >by a watch battery, though I'm not absolutely sure on that account. >It may be self-powered from the door. > I had a similar device from the same manufacturer. It may be an older model since it is a small magnet which hangs around the cat's neck. The unit had to be adjusted to match the local magnetic field and I found that it required readjustment as battery aged. It bacame a not uncommon sight to see two angry cats waiting outside the cat flap when I came home. So I have dismantled it and replaced it with a standard old fashioned flap. I do, however have problems with invading cats especially one a big black monster "the great invader". Anyone have any solutions to this problem? Do more modern flaps work? ---Mike Brought to you by Super Global Mega Corp .com