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> Slr-835BH direct-wire photoelectric heat smoke detector
Slr-835BH direct-wire photoelectric heat smoke detector
SLR-835BH-4W DIRECT-WIRE PHOTOELECTRIC
New - Never used - still has green cover on it. Comes as shown in pictures
Low Profile - Only 2.375" High.
Highly Stable Operation, RF/Transient Protection
Two built-in power/sensitivity supervision/alarm LED's
Non-Directional Smoke Chamber
Vandal Resistant Security Locking Feature
Removable smoke labyrinth for cleaning or
Automatic Sensitivity window verification function
meets outlined requirements in NFPA 72,
Inspection,Testing and Maintenance.
The SLR-835BH Series photoelectric smoke detector
utilizes two bicolored LEDs for indication of status. In a
normal standby condition the LEDs flash Green every 3
seconds. When the detector senses that its sensitivity
has drifted outside the UL listed sensitivity window the
LEDs will flash Red every 3 seconds. When the detector
senses smoke and goes into alarm the status LEDs
The unit is comprised of an LED light source and silicon
photo diode receiving element. In a normal standby
condition, the receiving element receives no light from
pulsing light source. In the event of fire, smoke enters
the detector and light is reflected from the smoke
particles to the receiving element. The light received is
converted to an electronic signal. Signals are processed
in the comparator, and when two consecutive signals
exceeding the basic level are received within a specific
period of time, the time delay circuit triggers the SCR
switch to activate the alarm signal. The Status LED
lights continuously during alarm period.
I am not a dealer for this company.
