KC868-AI - from Alarm panel

[Bestgear]

Hi Guys

I want to connect my KC868-AI to a couple of output expanders on my alarm panel.

The alarm provides a -ve switched output.

I am considering, given that the KC868 will get 12v from the alarm panel (ie common power rails), I can just use the switched negative to the KC868 input, as that will pull it low.

First question - are the inputs "KCOM" black connector tied to the KC868 power supply input ground or are they isolated?

Second question - do you think its probable that I can just connect the alarm panel output to the KC868 input, and leave the "KCOM" black connector empty, and hope/assume the input will float high, and get pulled low to switch the KC868 when the panel pulls it low?

Many thanks for your thoughts.

[admin]

our board's KCOM = GND, they are connected together in PCB.
if you want use two system, make sure all use same power supply. if you use two power supply for different board, their "GROUND" should connect together.
AI board's digital input port, if input "0v" means trigger, if input "12v" or "24v" means NOT trigger. (according to use 12v or 24v power supply.)