Installing A Keyswitch - First Alert
FA168CPS Installation And Setup Manual

Transmitter Battery Life
• See Wireless Transmitter paragraph in the Limitations of This Alarm System statement located at the end
of this manual for information on transmitter battery life.
• Some transmitters (e.g., 5802 and 5802CP) contain long-life but non-replaceable batteries, and no battery
installation is required. At the end of their life, the complete unit must be replaced (and a new serial
number enrolled by the control).
• Button-type transmitters (such as 5801, 5802, and 5802CP) should be periodically tested for battery life.
• The 5802MN and 5804 Button Transmitters have replaceable batteries.
Do not install batteries in wireless transmitters until you are ready to enroll during system programming.
After enrolling, batteries need not be removed.

Installing a Keyswitch

1. Connect the 4146 keyswitch's normally open
momentary switch to a zone's (2-8) terminals.
Remove the 2000 ohm EOL resistor if connected
across the selected zone.
2. Using a standard keypad cable as shown:
Connect the yellow and white keyswitch wires to
trigger connector pin 3 (+12V).
Connect the Red and Green LED wires to the
appropriate output 17/output 18 trigger connector
pins.
3. Connect a 2000 ohm EOL resistor across the
momentary switch.
4. You can wire an optional closed-circuit tamper switch
(model 112) in series with the zone. If the switchplate
is then removed from the wall, the tamper will open,
disabling keyswitch operation until the system is
next disarmed from the keypad.
If the tamper is opened when the system is armed, an
alarm will occur.
U L
A UL Listed keyswitch is required for fire
installations and UL commercial and residential burglar
alarm installations.
If a keyswitch is used on:
• an installation that transmits opening and closing
signals, the keyswitch zone must be programmed to
send opening and closing signals.
• a UL commercial burglar alarm installation, the
keyswitch's tamper switch must be connected in to the
alarm system. This tamper switch zone must also be
programmed for Zone Type 05 – Trouble by Day /
Alarm by Night.
• a fire alarm installation, the keyswitch must be located
next to an alphanumeric display keypad.
The Ademco 4146 keyswitch is UL Listed.
Mounting and Wiring the Control
Notes
• Use 4146 keyswitch or any N.O. keyswitch.
• Use only one keyswitch per partition.
• When using a keyswitch, the zone it is connected
to is no longer available for use as a protective
zone.
• Use *56 Menu mode to program the keyswitch
zone and assign it zone type 77.
• Use *80 Menu mode to program the LED
functions: program outputs 17 and 18 for system
operation zone type 78 (red LED) and 79 (green
LED) as appropriate (see Output Device
Programming section).
8-PIN TRIGGER CONNECTOR
1 3 4 5 6 7 8
STANDARD
KEYPAD
CABLE
YELLOW
WHITE
BLACK
RED
BROWN
11
TYPICAL ZONE
ON CONTROL
BOARD
BLUE
10
Figure 10. Keyswitch Wiring Connections
4146 KEYSWITCH
(ARMED)
RED
(READY)
GREEN
820 820
ohms ohms
TAMPER
SWITCH (N. C.)
BROWN
LOCK
SWITCH (N. O.)
BLUE
EOLR
(use appropriate value)
2-9