Security Technician Posted April 13, 2004 Share Posted April 13, 2004 I am trying to source some door contacts which work the opposite to standard ones being tht the reed is normally closed but goes open when magnet is applied. It is for some door monitoring on a nurse call system Link to comment Share on other sites More sharing options...
Service Engineer Posted April 13, 2004 Share Posted April 13, 2004 I`ve got some in the van, i`ll try and find out where they came from. Door Shut = OPEN Contact Door Open = CLOSED Contact I assume that`s what your after.. ........................................................ Dave Partridge (Romec Service Engineer) Link to comment Share on other sites More sharing options...
ian.cant Posted April 13, 2004 Share Posted April 13, 2004 Either that or use the contact to switch the feed to a mini relay! Link to comment Share on other sites More sharing options...
Woosh Posted April 13, 2004 Share Posted April 13, 2004 I have used 3 position dc before alough only in surface form they have NO NC C also tapmer term. I think they came from RS Gardiners and A+A are usless for anything odd like this. Link to comment Share on other sites More sharing options...
breff Posted April 13, 2004 Share Posted April 13, 2004 Im sure we used to get surface reed switches which go cc when the magnet is removed from RS Components when I used to fit alarms to vans. We used to use them on the back roller shutter. The opinions I express are mine and are usually correct! (Except when I'm wrong)(which I'm not) Link to comment Share on other sites More sharing options...
Guest Samholland Posted April 13, 2004 Share Posted April 13, 2004 We had some only weeks ago for a similar situation. Supplier was gardiner security Sam Link to comment Share on other sites More sharing options...
ian.cant Posted April 13, 2004 Share Posted April 13, 2004 Were they the big old reeds of days gone by or have they been modernised? Link to comment Share on other sites More sharing options...
Service Engineer Posted April 13, 2004 Share Posted April 13, 2004 Supplier was gardiner securityYeah that`s where I`m told our`s were from too.Were they the big old reeds of days gone by or have they been modernised? You can still get them, but not many customers want them, they all think smaller is better. ........................................................ Dave Partridge (Romec Service Engineer) Link to comment Share on other sites More sharing options...
Guest Samholland Posted April 13, 2004 Share Posted April 13, 2004 The ones we ordered weeks ago were identical in size/shape as the usual ones, so had to hide them from the managing director so they didn't get mixed up..... Link to comment Share on other sites More sharing options...
ian.cant Posted April 13, 2004 Share Posted April 13, 2004 I can still hear the "plink" as the reed is pulled over. Everything has to be smaller these days, except for my beer gut thankfully! Link to comment Share on other sites More sharing options...
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