Manual
Open the 
Page Sensor
Ceiling Mounted 
Paging Speaker
Priority
Page
Sensor
Strip plenum jacket from
speaker cable to reveal
two speaker wires.
Speaker Cable with
Plenum Jacket Intact
d
Open the sensor and loop a wire around the 
sensor.
b
 UL-Compliant Junction Box and Cover
Optional Accessory Installation — Priority Page Sensor Kit
The Priority Page Sensor Kit momentarily silences classroom audio whenever a page is made from a public 
address (PA) system. 
For detailed information, see the Priority Page Sensor Kit Installation Instructions, supplied with the device.
NOTE:  The Priority Page Sensor works with traditional 25 V or 70 V and 4/8 ohm PA systems. It is not 
designed for, and may not work properly with, two-way intercoms or systems that are IP-based or that use 
digital clocks.
Priority Page Sensor Kit Included Parts:
• Priority Page Sensor
• UL-compliant junction box with a cable clamp and a lid
• 35 feet. (10.7 m) of sensor cable
Installation Procedure
WARNING:  RIsk of serious personal injury if installation is not done correctly. All structural steps, 
anchoring, and electrical installation should be performed by qualified personnel in accordance with local 
and national building codes, fire and safety codes, and/or local and national electrical codes. 
To meet the plenum rating requirement, the Priority Page Sensor assembly must be installed in a 
UL-compliant junction box with a cover. All cables to and from the sensor must be plenum rated.
1.  Choose a suitable location for the sensor near, 
and in series with, the speakers.
2.  If the sensor is to be located in a plenum 
space, the junction box (provided) can be 
used. Knock out an opening at one end of the 
box and attach the cable clamp (see figure at 
right). Secure the box at the sensor location.
3.  Disconnect the PA system speaker cable from the 
speaker. 
Remove the outer protective jacket from the 
speaker cable to expose the two speaker wires 
from the sensor to the speaker (as shown at right). 
Do not remove the inner protective jackets that 
cover the individual wires. 
If the sensor is to be located in a plenum space, 
feed a loop of one of the exposed speaker wires 
through the cable clamp into the junction box. 
The other wire must bypass the sensor to be 
connected later directly to the speaker. 
4.  Open the top of the Priority Page Sensor and loop 
the speaker wire that is inside the junction box 
tightly around the top part of the sensor. 
NOTE:  Loop only one of the speaker wires 
around the sensor cover. Do not loop both 
wires. Polarity need not be observed.
The other speaker wire must bypass the sensor and 
connect directly to the speaker.
• For a 25 V or 70 V system, wrap 5 to 8 loops.
• For a 4/8 ohm system, wrap 2 to 4 loops.
Cable Clamp
PoleVault IP Systems • Optional Accessories 45










