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B0016L9TAE
Smoke detector with an extra relay for two added features: power supervision and sensitivity status
Advanced false alarm immunity
Automatically reports trouble when dirty
Integral power supervision
Field replaceable optical chamber
B0016L9TAE
The GE Security ESL 449CTE is a self-diagnostic, four-wire smoke detector with an extra relay that provides two added functions: power supervision and sensitivity status. Its supervisory relay is normally energized, and triggers with power loss, providing power supervision. The relay also trips if the detector's self-diagnostics detect an electronic failure, or if the detector is outside the UL listed sensitivity range for more than one day. This results in a trouble condition at the control panel, providing early warning that the detector needs cleaning or maintenance. This meets NFPA 72 field sensitivity testing requirements without the need for external meters. The detector works on the light scattering principle for superior protection against false alarms caused by dust, insects, RF and ambient-light. A pulsed infrared light-emitting diode serves as the light source, and a high-speed photo-diode as the sensing element. When the amount of light reflected onto the photo-diode reaches the sensitivity setting, the smoke sampling rate increases. Three successive smoke sensings above the sensitivity setting are then required to sound an alarm. A confirmed alarm causes the normally flashing power indicator LED to light continuously and the alarm relay to operate.
List Price:$64.95
Price: $72.99
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B0016L9TAE
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