[ale] Need an Ethernet cutoff relay

[Jim Kinney]

https://www.morssmitt.com/uploads/files/catalog/products/datasheet-d8-relay-module-v3-2.pdf

They have a normally open 8 pole relay that can kill everything a cat6 wire can handle. Output the off signal to rpi or arduino with relay hat to drive the higher voltage relays on the wire.

On July 31, 2021 4:41:29 AM EDT, Alex Carver via Ale <ale at ale.org> wrote:
>Gah, no X-10.  No remote control either.  This is going to be a
>hardwired kill-switch application that has to be manually reset.  If
>the
>camera gets knocked off the wall, the switch will open and won't close
>even if they plug the camera back in.
>
>On 2021-07-29 09:18, Bob Toxen via Ale wrote:
>> Great idea.  X-10 remote control could be used to kill power.
>> X-10 can, of course, be controlled by computer, phone, or otherwise.
>> 
>> On Thu, Jul 29, 2021 at 10:26:56AM -0400, Phil Turmel via Ale wrote:
>>> If you can't find anything else, consider a small brainless
>>> unmanaged POE switch and kill its power.
>>>
>>> On 7/26/21 2:18 PM, Alex Carver via Ale wrote:
>>>> I've been searching for over a week now with no luck.
>>>>
>>>> What I'm looking for is a small-ish (DIN rail mount would be ideal)
>>>> relay device that accepts a signal and will completely cut off all
>four
>>>> pairs of an Ethernet connection.   It should at least be shielded
>(so no
>>>> cheap switch boxes from Amazon adorned with Brother P-Touch labels,
>>>> those are also manual push buttons :) ).
>>>>
>>>> Some of the closest I've gotten are A/B switches but they're in
>desktop
>>>> cases and are just too big.
>>>>
>>>> Purpose:
>>>> I am going to be installing a VoIP door station to replace the
>doorbell
>>>> button. It's a PoE unit so I do need all the pairs. It has several
>>>> additional I/O and power ports for various uses, one of which
>provides a
>>>> steady 12 VDC when the unit is up. I plan to link this to a
>latching
>>>> relay in such a way that if the 12 VDC suddenly disappears (e.g.
>someone
>>>> took a baseball bat and adjusted the camera angle), it will break
>the
>>>> Ethernet lines to the exposed patch cable making it a dead cable
>which a
>>>> computer can't use.
>>>>
>>>> The box itself doesn't need the latching relay, it just needs a
>simple
>>>> relay that is either on or off with the application of signal. 
>I'll
>>>> take care of the latching part separately with other external
>relays.
>>>>
>>>> I just can't seem to find anything like this.  Just for fun I tried
>an
>>>> industrial PoE injector that I had handy which takes 24 VDC in but
>the
>>>> data lines are passed right through the unit so even with it off it
>>>> doesn't stop the drop from working as a minimum 10/100 (two pair)
>port.
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>>>
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>
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