
Section 7 - 2-Wire Polling Loop Expansion
7-7
Compatible Polling Loop Devices (cont’d)
4194 Surface Mount Reed
Contact (Wide Gap)
• Wide-gap, surface-mounted reed contact
with built-in RPM (connects directly to the
polling loop).
• DIP switch-programmable.
4297 Extender Module
• Used to increase the polling loop current
(128mA), to extend the polling loop wire
run length, and/or to provide individual,
electrically isolated loops.
• Connects to the polling loop and is powered
from panel's auxiliary power or by a
separate power supply with battery
backup.
4192SD Photoelectric Smoke
Detector Devices
• One-piece photoelectric smoke detector
with built-in RPM.
• DIP switch-programmable.
4192SDT Photoelectric Smoke
Detector w/Heat
Detector
• One-piece photoelectric smoke detector
with 135°F (57°C) heat detector and built-
in RPM.
• DIP switch-programmable.
4192CP Ionization Smoke
Detector
• One-piece products of combustion
ionization detector with built-in RPM.
• DIP switch-programmable.
4101SN Serial Number
Single Output Relay
Module
• Form C relay rated at 2A, 28VAC/VDC
with contact supervision.
• One class B/style B EOLR-supervised aux
input zone.
• Serial Number ID programmed by control
panel.
• Tamper-protected cover.
4939SN-BR
4939SN-GY
Serial Number
Surface Mount
Reed Contacts
• Compact surface-mount magnetic reed
contact with built-in RPM.
• Serial number ID programmed by control
panel.
4191SN-WH Serial Number
Recessed Reed
Contact
• Recessed (1/2” dia.) magnetic reed contact
with built-in RPM.
• Serial number ID programmed by control
panel.
4959SN Aluminum Overhead
Door Contact
• 24-inch armored cable
• Serial Number ID programmed by control
panel.
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