Installation guide

1121 COMBO LEM

MODEL 1121 COMBINATION LEM (COMBO LEM)

The Model 1121 Combination Line Encoder Module (COMBO LEM) features one D-LEM and

one C-LEM combined together on a standard LEM-size printed circuit board. The D-LEM is

separately addressable from the C-LEM. This device is intended for use in installations that

require local contact closure upon detection of an alarm condition (e.g., fire doors with a local

siren).

The DIL switches are used to address the D-LEM and C-LEM sections of the COMBO LEM in

exactly the same way as an individual unit. See the coding table on page 26. The alarm input

loops are wired like a standard D-LEM. See page 13.