Rev. 4 - 02/09
High Priority Emergency
Call Control Unit
The Alpha Communications® PK153 high priority control unit
is used only with the NC110A, NC110N, NC150N, NC150R
and NC200N series nurse-call and area of refuge (area of rescue)
type systems and annunciators. The PK153 is used to provide
a third level of signaling priority, for applications such as fire/
heat/smoke detection and/or code call capabilities. One PK153
is required per system, in addition to the PK151A control unit(s).
No additional transformer is required. See the system wiring
diagram for the additional wiring requirements. The PK153 is
U.L.® Listed 1069.
All PK153 connections are positive barrier screw terminal type.
Easily Installs Right on Finished Wall Surface or in Op-
tional (IH151N) Junction Box
• Operates on Safe Low-Voltage Class II Wiring
Positive Barrier Screw Terminal Connections
• U.L.® Listed 1069 to Latest Standards (When used
with IH151N and SS106)
Provides Third Level of Signaling Priority
Rugged Extruded Aluminum Case
Positive barrier type screw terminal connec-
tions. Should be installed within 50 feet of
IH151N U.L.® Listed steel junction box cabinet, in a painted
Beige finish. Used to house and protect the PK153 and its wiring
See individual system wiring diagram for more complete wiring
ARCHITECTS' AND ENGINEERS'
The high (3rd) priority control unit shall be
Alpha Communications®/Tektone model
PK153, or approved equal, and shall provide
the third level of signaling priority. The PK153
shall automatically override normal and low
level emergency calls. The PK153 shall be
U.L.® Listed 1069 to the latest standards.
Low voltage wiring shall be used and positive
barrier type screw terminals shall be provided
for installation wiring. The PK153 shall be