6- Connect External Sensors - NEC SL2100 Quick Install Manual

Connect the External Sensors

6- Connect External Sensors

The SL2100 can be used to detect the operation of external sensors by connecting to the analogue extension
port that is set to doorphone mode.
The external sensor can be any normally open contact (Form A) for example, push button/panic switch or PIR
detector with a suitable specification.
When the external sensor is closed/activated the SL2100
system will ring a group of extensions in the same way as
the doorphone would.
Pin SLI 1-2
RJ45 socket
1 -
2 -
3 Door / sensor 2 T
4 Door / sensor 1 R
5 Door / sensor 1 T
6 Door / sensor 2 R
7 -
8 -
Description Specification
Voltage during sensor off (contact open): 25V
External
sensor Loop current during sensor on/activated (contact closed) : 40mA
Quick Install Guide – SL2100 Terminals Type B rev 1.0
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