Kidde SM120X - Manuel (Page 2)

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.
FIGURE 1
FIGURE 2
FIGURE 3
FIGURE 4
1201-7208-01 2007.1.26 5:41 PM Page 2