[ale] Need an Ethernet cutoff relay

[Robert Reese]

ROFL - I doubt someone breaking into a house to be met with the sound of a ratcheting shotgun is gonna call the cops, especially since the sound of a real one is perfectly legal :P


Friday, July 30, 2021, 11:42:36 AM, you wrote:

> I assume that you are joking, unless you want the SWAT team to visit.
> Instead, a recording of a snarling vicious dog would be
> effective and legal.

> On Thu, Jul 29, 2021 at 01:54:20PM -0400, Jim Kinney wrote:
>> So I guess my plan of having a prerecorded sound of a shotgun being racked followed by a taser discharge and a strobe light are secondary?

>> On July 29, 2021 12:48:17 PM EDT, Robert Reese via Ale <ale at ale.org> wrote:
>> >Hi Phil,
>> >
>> >Look at the offerings by Sequent Microsystems. They can be operated by
>> >a Pi. So you can roll your own bluetooth/wifi/etc. solution.  Yes, they
>> >have DIN rail mounts available. 
>> >https://sequentmicrosystems.com/collections/all-io-cards
>> >
>> >Also, there are many switches, such as were used in pinball machines,
>> >that can activate with the type of shock you're describing. All cheap,
>> >reliable, and easy to implement.
>> >
>> >Cheers,
>> >R~
>> >
>> >
>> >Thursday, July 29, 2021, 12:18:24 PM, you 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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>> >
>> >
>> >
>> >
>> >
>> >Cheers,
>> >Robert~
>> >
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>> -- 
>> Computers amplify human error
>> Super computers are really cool





Cheers,
Robert~