General Description
The device is intelligent sensors that utilize a state-ofthe-
art thermistor sensing circuit for fast response.
These sensors are designed to provide open area
protection with 50 foot spacing capability. The device
is a rate-of-rise temperature sensor with 135°F fixed
temperature alarm.
The device is a rate-of-rise with fixed temperature
alarm thermal detector utilizing a state-of-the-art dual
thermistor sensing circuit. These detectors are
designed to provide open area protection with 50-foot
spacing capability, and are to be used with
compatible control panels only.
Two LEDs on each detector light to provide 360°
visibility of the detector indication.

Features and Benefits
Compatible with all the conventional fire alarm
control panel
Unpolarized wire input
Wide range of operating voltages
High precision electronic thermistor
Built in microprocessor intelligent software
Two LEDs blink standby, provide 360° visibility
Insect-resistant screening
Twist-on mounting base with tamper lock
Remote Indicator LED can be connected.

Installation Guidelines
All wiring must be installed in compliance with the Nationa Electrical
Code, applicable state and local codes, and any special requirements of
the local Authority Having Jurisdiction.

Technical Specifications
Ordering Information
Individual(1 units)
Dimensions
(w x d x h millimetres) Weight
99x99x48 155g
Diameter: 99mm
Height (including mounting base): 48 mm
Weight: 155 g
Operating Temperature Range: -10°C to 50°C
Operating Humidity Range: 10% to 93% Relative Humidity, Noncondensing
Latching Alarm: Reset by momentary power interruption

Electrical Ratings
System Voltage (nominal): 24 VDC (9V~ 28VDC)
Standby Current: 40 μA @ 24VDC
Alarm Current: 30 mA @ 24VDC
Fixed Temperature Rating: 57°C (135°F)
Rate of Rise Detection: Responds to greater than 15°F/min