Kidde 21025831 User Manual

FIGURE 1 shows a typical installation of a relay / power supply module wired to switch

on 120 volt device when the alarms sound. In this configuration the common switch

contact (blue wire) is connected to the 120 volt supply. When the alarms sound the

module detects the signal on the interconnect line (red wire) and activates the relay. As

a result of this action, the orange wire (NO) supplies 120 volts to the device.
FIGURE 2 shows a typical installation of a manual pull station and a relay / power

supply module. In this configuration the module receives 120-volt power all the time. The

9-volt DC output (gray wire) is used to supply power to the pull station, and the relay

portion is used to control a 120-volt device configured to switch on when the module is

activated. The pull station switches the 9 volt signal from the module back into the

interconnect line.

Activating the pull station will sound the alarms and activate the relay portion of the

module. The common terminal of the switch contact (blue wire) is connected to the 120-

volt supply. When the alarms sound or the pull station is activated the module detects

the signal on the interconnect line (red wire) and activates the relay. As result of this

action, the orange wire (NO) supplies 120 volts to the device.
FIGURE 3 and 4 show the typical installation of a relay / power supply module and a

manual pull station or a spot type heat detector, interconnected with multiple station

alarms. In both of these configurations the connected device (manual pull station or spot

type heat detector) switches on the AC power to the  module when the device is

activated. The module then supplies the DC interconnect signal (gray wire) needed to

activate all of the interconnected alarms.
NOTE: The switch contacts in the Pull Station or the Heat detector must be rated for 120

volts in this application.

1201-7208-01  2007.1.26  5:41 PM  Page 2