ADT Security Services ADT-LCD40 - Manual (Page 8)

ADT-LCD40 Series Annunciators Components
8 Document 50520 Rev D 7/25/00 P/N 50520:D
Figure 1-1: Components
Future use
ON = Piezo Enable
OFF = Key-switch Disable on ADT-LCD40 only
(not used on ADT-LCD40L)
OFF = Receive only
Top view
Note: OPEN (Up)
position on SW1
is OFF state (See
“Wiring to Termi-
nals” on page 9.).
ROM
The ADT-LCD40 sounder, if enabled, will
be activated when any new alarm or trouble
is received from the panel. It is silenced by
an Acknowledge switch. Piezo must not be
disabled without approval of the LAHJ
(Local Authority Having Jurisdiction).
Piezo Sounder Membrane Connector
Cable connection to membrane switches
for Acknowledge, Silence, Drill and Reset.