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SB008-SC
SCI – Triggering the Door Chime With an
Integrated Door Sensor
©Copyright 2011 by Legrand. All Rights Reserved.
I. Application/Purpose
This bulletin will detail the integration of a door sensor into the Selective Call Door Unit. The purpose
of the application is to allow for the Selective Call Intercom door chime to ring when a door is opened
in the house. This application can be used in situations where a Sales Agent in a model home would
like to hear when someone enters the house as well as standard residential security applications.
II. Associated Part Numbers
IC5001 – Selective Call 8 Location Distribution Module
PW1030 – 24v 1.5amp Power Supply
IC5002-xx/IC5003-xx – Selective Call Door Unit/Selective Call Video Door Unit
IC5000-xx – Selective Call Room Station
Seco-Larm SM-300Q – Door Sensor for Open Loop (Third Party Device)
III. Explanation
The Selective Call Intercom Door Station has two sets of screw-down terminal inputs available on the
back of the unit. These are normally open (contact closure) connections that allow the integration of a
third party door chime as well as a door sensor. In this application we’ll be using the sensor input to
integrate into the Seco-Larm SM300-Q door sensor.
Connectivity is relatively straightforward as the Seco device has surface mounted screw-down
terminals for normally open connectivity. Two wires/conductors should be run from the sensor device
to the location of the door station installation. The positive or NO (normally open) output would
connect to the positive/NO connection on the back of the door station. The negative or ground output
from the Seco device would connect to the negative/ground connection on the back of the door
station (See Figure 1 for full diagram).
No further connectivity or settings changes on the system are needed at this point. Once the
connectivity is completed, the door sensor should be tripped which should automatically cause the
Selective Call door chime to ring throughout all stations on the Selective Call Intercom System.