Open garden gate indicator
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Posted by JD on July 14, 2007, 8:31 am
Please log in for more thread options is open or closed. I saw something in the Home Automation catalog but the magnetic switch doesn't look like it is waterproof. I have also been thinking about modifying a Craftsman Garage door open/closed system that I use but am not quite sure how to do that. Any ideas out there? Thanks JD | |||||||||||||||||||
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Posted by Robert L Bass on July 14, 2007, 10:53 am
Please log in for more thread options Virtually all of the magnetic sensors (called "contacts") used in the alarm industry are waterproof. GE Security, GRI and Honeywell all make reliable, wide-gap contacts that could easily be used for this purpose. Your choice will depend on the distance between the gate and the fence when it is closed. If it's tight fitting (less than 1/2 an inch) almost any standard door sensor will do. If the gap is larger, up to 3", you'll need one of the models used for a garage door. Standard door contacts cost between $2 and $4 and wide gap; ones for a garage door cost about $11 or so up to $27, depending on the model. If the gate is made of iron, you'll need a wide-gap contact. These are available with brackets designed for mounting on the kind of pipe used to build fences. On a reasonably close-fitting, wooden fence gate you could fit a recessed contact which is concealed from view. If you only need one or two of the basic contacts, let me know and I'll send you a sample. I sell hundreds of door contacts from various manufacturers in my online store. -- Regards, Robert L Bass =============================>
Bass Home Electronics
941-925-8650 4883 Fallcrest Circle Sarasota · Florida · 34233 http://www.bassburglaralarms.com =============================>
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Posted by Nick Hull on July 16, 2007, 6:05 pm
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> > I am looking for something that will let me know
> > if one of my garden gates is open or closed. I > > saw something in the Home Automation catalog > > but the magnetic switch doesn't look like it is > > waterproof. I have also been thinking about > > modifying a Craftsman Garage door open/closed > > system that I use but am not quite sure how to > > do that. Any ideas out there? >
> Virtually all of the magnetic sensors (called "contacts") > used in the alarm industry are waterproof. GE Security, > GRI and Honeywell all make reliable, wide-gap contacts > that could easily be used for this purpose. Your choice > will depend on the distance between the gate and the > fence when it is closed. If it's tight fitting (less than 1/2 > an inch) almost any standard door sensor will do. If the > gap is larger, up to 3", you'll need one of the models > used for a garage door. Standard door contacts cost > between $2 and $4 and wide gap; ones for a garage > door cost about $11 or so up to $27, depending on the > model. I use magnetic reed switches on outdoor gates; they are waterproof and work well BUT they can get welded by a near lightning strike. Proper protection (zeners, diodes, chokes) make them last longer. The high current ones take more abuse. | |||||||||||||||||||
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> if one of my garden gates is open or closed. I
> saw something in the Home Automation catalog
> but the magnetic switch doesn't look like it is
> waterproof. I have also been thinking about
> modifying a Craftsman Garage door open/closed
> system that I use but am not quite sure how to
> do that. Any ideas out there?