I want to have a remote building set up as a separate area on my M1G. The cat5e wire between the M1G/M1DBH and the remote building has a potential exposure via a pull box on the outside wall. In a different thread, someone mentioned that if an intruder was able to get to the data bus wire, he could put a high voltage to it and possibly damage/cripple/destroy the M1G. That led to a suggestion to put a tamper switch on the pull box cover, which I will do.
If I want to go one step further to protect the system and my home, can I run the eight conductors in the data bus cat5e wire thru an M1RB relay module (one conductor per relay) ahead of the M1DBH data bus hub? That way, if an alarm was set off by the tamper switch or the wires being cut outside the house, the M1G could open the eight relays, effectively isolating the outside data bus wire from the M1G in my home. I guess the big question is can the data bus reliably communicate "thru" the relays? The total length of the data bus wire run is a little less than 200'.
One other question...the diagrams in the Elk manuals always show a single keypad/board/etc. at the end of a run to the M1DBH. Can multiple keypads/boards be daisy-chained on a single run from the M1DBH? In other words, can I have a single cat5e running from the M1DBH to my remote building that serves a couple of keypads and a few expansion boards in the remote building? If so, does the last device on the line need to be terminated, or does the M1DBH handle the termination in this scenario, too?
Thanks,
Ira
If I want to go one step further to protect the system and my home, can I run the eight conductors in the data bus cat5e wire thru an M1RB relay module (one conductor per relay) ahead of the M1DBH data bus hub? That way, if an alarm was set off by the tamper switch or the wires being cut outside the house, the M1G could open the eight relays, effectively isolating the outside data bus wire from the M1G in my home. I guess the big question is can the data bus reliably communicate "thru" the relays? The total length of the data bus wire run is a little less than 200'.
One other question...the diagrams in the Elk manuals always show a single keypad/board/etc. at the end of a run to the M1DBH. Can multiple keypads/boards be daisy-chained on a single run from the M1DBH? In other words, can I have a single cat5e running from the M1DBH to my remote building that serves a couple of keypads and a few expansion boards in the remote building? If so, does the last device on the line need to be terminated, or does the M1DBH handle the termination in this scenario, too?
Thanks,
Ira