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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Alarm switches for steel windows
I want to fit alarm switches to a significant number of steel (Crittall)
windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? |
#2
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Alarm switches for steel windows
wrote:
I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? Why not try one first? Tim -- Please don't feed the trolls |
#3
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Alarm switches for steel windows
I think they mount them spaced away by a non metallic piece.
Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! wrote in message ... I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? |
#4
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Alarm switches for steel windows
In article ,
wrote: I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? I assume you mean the common surface mount types? The flush ones I used would be a problem with steel windows. But the answer would be try one and see. Just connect your DVM across the reed switch. Perhaps glue a small piece of wood to the frame and the sensor to that. -- *On the seventh day He brewed beer * Dave Plowman London SW To e-mail, change noise into sound. |
#6
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Alarm switches for steel windows
On Wednesday, 14 June 2017 14:49:40 UTC+1, wrote:
I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? So use microswitches. NT |
#7
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Alarm switches for steel windows
ARW wrote:
On 14/06/2017 14:49, wrote: I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? As what others say, hold one onto place and try it. I fitted one to a steel door with a steel door frame last week with no problems. Yes, I've the same experience. |
#8
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Alarm switches for steel windows
On 15/06/2017 09:48, Capitol wrote:
ARW wrote: On 14/06/2017 14:49, wrote: I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? As what others say, hold one onto place and try it. I fitted one to a steel door with a steel door frame last week with no problems. Yes, I've the same experience. Clearly I'll try one before ordering the whole lot, but it's useful to hear that others have used them without problems. |
#9
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Alarm switches for steel windows
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#11
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Alarm switches for steel windows
On 15/06/2017 17:06, ARW wrote:
On 15/06/2017 11:30, wrote: On 14/06/2017 19:31, wrote: On Wednesday, 14 June 2017 14:49:40 UTC+1, wrote: I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? So use microswitches. NT I was considering microswitches (or, possibly, a slotted opto sensor) but I can't find anything that looks reasonable for a sensible price. Hmm, I just tried to check the alarm input specs and discovered that all the sensors are wired in parallel with an "iD" signalling system, so it may not be straightforward to replace some of the PIRs with switches ... more study needed! I don't know what you know about them but google for "ID biscuit alarms" etc Until a few hours ago I didn't even know they existed, now I know how to use them and where to buy them. It seems that the system is a bit dated but they look simple to use and the current set-up works well so reconfiguring it shouldn't be too difficult. I need to check the IDs of the existing "biscuits" before ordering some new ones but there seem to be two types (black and white) and I can't find out what the difference is (apart from the obvious!) ... can anyone enlighten me? |
#12
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Alarm switches for steel windows
On Thursday, 15 June 2017 17:34:45 UTC+1, wrote:
On 15/06/2017 17:06, ARW wrote: On 15/06/2017 11:30, wrote: Hmm, I just tried to check the alarm input specs and discovered that all the sensors are wired in parallel with an "iD" signalling system, so it may not be straightforward to replace some of the PIRs with switches ... more study needed! I don't know what you know about them but google for "ID biscuit alarms" etc Until a few hours ago I didn't even know they existed, now I know how to use them and where to buy them. It seems that the system is a bit dated but they look simple to use and the current set-up works well so reconfiguring it shouldn't be too difficult. I need to check the IDs of the existing "biscuits" before ordering some new ones but there seem to be two types (black and white) and I can't find out what the difference is (apart from the obvious!) ... can anyone enlighten me? chocolate vs custard cream. NT |
#13
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Alarm switches for steel windows
On 15/06/2017 17:34, wrote:
On 15/06/2017 17:06, ARW wrote: On 15/06/2017 11:30, wrote: On 14/06/2017 19:31, wrote: On Wednesday, 14 June 2017 14:49:40 UTC+1, wrote: I want to fit alarm switches to a significant number of steel (Crittall) windows but I'm concerned that the reed switch types will get confused by the steel frame. Can anyone suggest alternatives? So use microswitches. NT I was considering microswitches (or, possibly, a slotted opto sensor) but I can't find anything that looks reasonable for a sensible price. Hmm, I just tried to check the alarm input specs and discovered that all the sensors are wired in parallel with an "iD" signalling system, so it may not be straightforward to replace some of the PIRs with switches ... more study needed! I don't know what you know about them but google for "ID biscuit alarms" etc Until a few hours ago I didn't even know they existed, now I know how to use them and where to buy them. It seems that the system is a bit dated but they look simple to use and the current set-up works well so reconfiguring it shouldn't be too difficult. I need to check the IDs of the existing "biscuits" before ordering some new ones but there seem to be two types (black and white) and I can't find out what the difference is (apart from the obvious!) ... can anyone enlighten me? Best guess without asking my mate (he is in Spain) it is that they have different resistances for certain panels and that they are a variation on an EOL installation. http://www.castle-caretech.com/wh/ma...sc-id-plus.pdf -- Adam |
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