8
LOW VOLTAGE WIRING
Open the interior door to access the connectors in the low voltage section. All input/output wiring in this
section must be low voltage, Class 2 wiring. Do not use the low voltage wiring compartment as a raceway or
junction box. Refer to local codes regarding Class 2 wiring practices.
Hardwire Low Voltage Switches (Optional)
LP panels include a switch input for each relay. These accept any of the dry-contact configurations shown
below. Operation of the switch will turn on/off the corresponding relay.
To control multiple relays from a single input device, we recommend
using the optional Group Switching Card . See page 9 .
Figure 9: Low voltage switch and sensor wiring
R B Y W
2-WIRE MAINTAINED
CONTACT
R -to- B JUMPER
B -to- W JUMPER
2-WIRE MOMENTARY
PUSH BUTTON
STANDARD 3-WIRE
MOMENTARY
STANDARD 3-WIRE
MAINTAINED
R B Y W
RED
WHITE
RED
WHITE
BLACK
WHITE
RED
BLACK
WHITE
RED
R B Y W
R B Y W
R B Y W
OCCUPANCY SENSOR or
INDOOR PHOTOCELL
BLACK
BLUE
RED
Blue
Black
Red
White
24VDC
24VR
24V
AC
COMMON
CONTROL
24VDC
R B Y W
COMBINATION OF
2-WIRE MOMENTARY PUSHBUTTON
WITH OCCUPANCY SENSOR or
INDOOR PHOTOCELL
BLACK
BLUE
RED
Blue
Black
Red
White
24VDC
24VR
24V
AC
COMMON
CONTROL
24VDC
BLACK
WHITE
Black
White
Single relay input
on panel’s main
relay switch
board
-OR-
Group channel
connection
on Group
Switching card
R = red: ON
B = black: OFF
Y = yellow: Pilot
W = white: Common
Do not hardwire multiple relay inputs
together when using a 2-wire momentary
switch for control . Use a Group Switch Card .
Visit our web site for FAQs: www .wattstopper .com
