Interlogix 711U, 721U, 731U Specsheet
FireworX Fire & Life Safety
Conventional Initiating Devices
Overview
The GE photoelectric smoke detector is an interchangable head and
base detector with a light-scattering optical sensor that provides
outstanding stability and excellent response to a wide range of fires.
A pulsed infrared LED light source and a high-speed photodiode
sensing element are housed in an omnidirectional sensing chamber
which is protected by an insect screen. The chamber is not affected
by ambient light. For easy cleaning, the detector features a field-replaceable optical chamber.
The Model 711UT, 721UT and 741UT photoelectric detectors include
integral fixed temperature heat detectors.
GE 700 Series smoke detectors are the industry’s first conventional
self-diagnostic detectors specifically designed for the demands of
commercial and industrial environments. If the detector drifts out of
its UL Listed sensitivity range or fails internal diagnostics, the alarm
LED flashes once a second to indicate trouble. This meets NFPA 72
field sensitivity testing requirements without the need for external
meters.
Additional diagnostic information is activated by applying a magnet
near the detector’s integral reed switch. This initiates a self-diagnostic routine and provides visual indication of sensitivity level, or
if service is required. The magnet test causes the LED to blink. The
number of blink counts corresponds to a smoke detector sensitivity
range.
And, if they become dirty over time, the 700 Series detectors automatically adjust the alarm threshold through built-in drift compensation.
Standard Features
Self-diagnostic capabililty continually monitors operation
•
Automatic drift compensation
•
Field-replaceable optical chamber
•
Low-profile design blends into the ceiling
•
Advanced nuisance alarm immunity
•
Extensive two-wire compatibility listings
•
Two- and Four-Wire
Self-Diagnostic
Smoke Detectors
700 Series
Compatibility
Heads Bases
711U 701U, 702E, 702U
731U 702RU
741U 702U
Engineering Specifications
The GE 700 Series photoelectric smoke detector, is a low-profile, self-diagnostic, two-wire
or four-wire detector that monitors its own sensitivity and operational status. The detector
meets NFPA 72 field sensitivity testing requirements without the need for external meters.
Built-in drift compensation automatically adjust the sensitivity if the detector gets dirty.
Normal sensing occurs every 9 seconds. This rate doubles when a signal exceeding the
alarm threshold value is sensed. Two additional successive signals above the threshold level
initiate an alarm. The patented optical sensing chamber is field replaceable, allowing quick
and easy cleaning and maintenance.
A manually operated switch between terminals 1 and 2 shall establish continuity across the
alarm, initiating circuit at initial installation. The switch automatically open when a detector
head is plugged in. If a detector head is removed from service, the switch will be reset using
a small screwdriver, thus re-establishing circuit continuity.
Technical Specifications
Electrical
Voltage 8.5 — 33VDC, non polarity sensitive
Maximum ripple (peak to peak) 10% (Vp - p)
Typical standby current (24V) 70μA
Typical alarm current (24V) up to 60 mA max, if not limited by control panel
Relay contacts 2A @ 30VDC, 1A @ 120 VAC
Photoelectric Sensitivity 2.85%, + 0.37, – 1.00%
Operating temperature 32°F to 120°F (0°C to 49°C)
Operating humidity range 0 to 95% Non-condensing
RFI immunity 20 V/m min; 0-1000 MHz
Remote LED output current 5 mA min, 8.5 mA max
Drift compensation adjustment 1.0%/ft. max
Environmental
Heat Sensor Ratings (721UT, 741UT) Fixed 135°F/ Rate of rise 15°
Maximum wind velocity 300 ft/min or
Field wiring size 12-24 AWG
Remote test input (721UT) 100 ohm max
Reset voltage 2.5V max
Reset time 1 second max
UL two-wire compatibility identifier S10A (711U, 711UT, 721UT)
S11A (731U)
Physical
Color White head and base
Detector head dimensions 4” D x 1.75” (4.44 cm) H
Detector packaging 10 detectors per carton
Base packaging 10 bases per carton
Base dimensions 702E: 4” D, 0.6” (10 x 1.3 cm) H
701U, 702U: 6” D, 0.6” x 1.3 cm) H
Total height, (head and base) 1.98” (5 cm) H
Regulations
Listing UL 268, FM, CSFM, MEA approved
Ordering Information
Photoelectric Heads 711U, 711UT, 721UT, 731U, 741U
Photoelectric Bases 701U, 702E, 702U, 702RE, 702RU
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