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Overview: This 9000 Series Gentex smoke alarm is a photoelectric type
unit for use as an alert and relocate device. The photoelectric smoke alarm has
a solid state piezo signal to warn and alert your household to the presence of
threatening smoke. The photoelectric smoke alarm is designed to detect the smoke
that results from an actual fire. It is uncommon for household
smoke such as cigarette smoke or normal cooking smoke to cause an alarm. The
9000 Series photoelectric smoke alarms is designed for residential and
commercial residential applications, including homes, apartments, hospitals,
hotels and motels, in compliance with UL 217, UL 1730 applicable IBC/IFC
Standards and NFPA 72.
Note: This smoke alarm produces a non-temporal audible alarm and
is therefore not intended for locations where the desired action of the
occupants is evacuation.
Alarm Functionality: The 9000 Series smoke alarm operates on the
photoelectric light scatter principle. The unit's sensing chamber houses a light
source and a light sensor. The darkened sensing chamber is exposed to the
atmosphere and designed to permit optimum smoke entry from any direction while
rejecting light from outside the smoke alarm. The light source is an infrared
(invisible) LED which pulses every 8 seconds. The light sensor is a photodiode
matched to the light frequency of the LED light source. Under normal conditions,
the light generated by the pulsing infrared LED is not seen by the light sensor,
as it is positioned out of the direct path of the light beam. When smoke enters
the sensing chamber, light from the pulsing LED light source is reflected by the
smoke particles onto the photodiode light sensor. At the first sighting of
smoke, the device is put into a pre-alarm mode. This is indicated by a rapidly
flashing LED on the face of the smoke alarm. Once the light sensor confirms
smoke for 2 consecutive pulses inside the chamber, the light sensor produces the
signal necessary to trigger the alarm and sound the electronic horn. This
technique of verifying the smoke condition, combined with a 5-to-1
signal-to-noise ratio, substantially reduces the possibility of nuisance alarms.
AC Powered with Battery Backup: The smoke detector operates off of
standard household current (120VAC). In the event AC Power fails, a 9VDC battery
(supplied) will provide proper alarm operation for a minimum of 24 hours.
The smoke detector also features a warning signal for low or missing battery.
Test Mode: The Gentex 9000 Series alarm provides an exclusive patented
three position test feature that simulates a 0.85% and 3.5% actual smoke
condition in full compliance with NFPA 72 and UL Standards.
Tandem Interconnection: Tandem interconnection of up to 6 units
is available, which activate the dry contacts from the tandem wire or a local
Sensaphone Connection: The smoke alarm can be wired to a Sensaphone
Remote Monitoring System (721FGD0400/721FGD0800) in your home or office so you
can be alerted of an activated smoke alarm in your home or office at a remote
location by telephone.
Mounting: This smoke alarm can be mounted on a ceiling or wall. The
photoelectric smoke alarm features a universal mounting bracket which allows it
to be mounted on a single gang, double gag, or 4" square box.