TheAlarmTech.com

hi...i'm new in est3
i have a problem regarding on the network est3..based on datasheet and previous statement have state the wire
length between 3 panel is 1500 meter.how about the forth panel because i have connect three panel
and it able to communicate , if i connect the forth panel,the voltage drop and the led at tx2, rx2 sometimes steady and
sometimes off.could somebody help me regarding on this problem and why this problem happen

Which network you use ( cooper or fiber)?

I called EST and asked about panel comm problems, he did not have anything much to say.

But keep in mind it is just RS485 communication between panels.
so think about the rs485 problem not the panel network problem. I know that sounds dump.

trouble shoot the rs485