4
2
1
3
Main
Board
(-)
4
To Next Signal
or
End-of-Line Resistor
(+)
2
4
1
Terminal Block
3
TB-1
Figure 3. Wiring to Terminal Block TB1
PROCESSOR BOARD
Figure 4. PC Board Locations
(-)
From Control Panel
Signal Circuit
(+)
Polarity shown in alarm condition. Polarity reversed in
field wiring monitoring condition of control panel.
CAUTION
To ensure proper supervision of connection, do
not use looped wires under terminal screws.
Break wire run. Use both sides of terminal screws
as shown.
INPUT BOARD
GND
+VS
N
IN4
POTENTIOMETER FOR
VOLUME ADJUSTMENT
2
4
1
3
Diode Assembly
2600010
PROGRAMMING
SWITCH SW4
(ON OTHER SIDE)
MAIN BOARD
(-)
To optional 24V DC
Battery Backup
(+)