Page 4 of 17 Revision 1.1 Aug 2020
Document No. AlarmLine II Digital EN Controller Installation Instructions
General Overview
AlarmLine II Digital EN Controller
The Kidde AlarmLine II Digital EN Controller is a dual zone module for
monitoring up to two zones of Kidde AlarmLine II Digital EN Linear Heat
Detection (LHD) Cable. If an overheat or fire situation triggers either zone
of the Digital LHD cable the unit automatically calculates and displays the
distance along the cable, in feet and metres, to the alarm point. The two
zones can operate independently of each other, or in interlock mode and
a separate alarm and normally conducting fault output are provided for
each zone. The unit is intended to be installed between the Digital Linear
Heat Detection cable and a conventional or addressable fire alarm
control panel. It has power, fault and alarm lights, as well as volt free
outputs for fault and alarm, corresponding to each zone. It may also be
connected to a industrial process control system using the two wire RS-
485 Modbus RTU/ASCII output.
Figure 1: Typical Installation of the AlarmLine II Digital EN Controller
AlarmLine II
Digital EN
LHD Cable
AlarmLine II
Digital EN
LHD Cable
AlarmLine II Digital
EN Controller