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521 Series

521 Series
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Conventional Fire Alarms Smoke Detectors 500 Series FIRE ALARMS Edwards 500 Series two-wire conventional photoelectric smoke detectors work on a light-scattering principle. A pulsed infrared light-emitting diode serves as the light source, and a high-speed photo diode as the sensing element. This design protects against nuisance alarms caused by dust, insects, RF interference, and ambient light. Built-in drift compensation allows the detector to automatically adjust its sensitivity over time as it becomes dirty. The 500 Series optical chamber is field replaceable. In the event of a confirmed alarm the LED will light continuously. The unit indicates trouble by flashing the LED every second. This meets the NFPA 72 field sensitivity testing requirements. The 500 Series offers sounders in two-wire applications, specifically to meet residential code requirements. Units with built-in 85dBA sounders emit a temporal 3-3-3 tone pattern when in alarm and will emit a steady tone when the input power is reversed. All wiring terminates in clamp-type screw terminals. The detectors mount to a standard single-gang electrical box, a four-inch octagonal, four-inch square electrical box, or WIREMOLD No. 5739 fixture box. Features and Specifications • elf-diagnostic capability continually S monitors operation • emote maintenance (CleanMe) reporting and R built-in drift compensation • Field-replaceable optical chamber • Low-profile design blends into the ceiling • Optional auxiliary functions include: - Integral sounder; 85dB @ 10ft. - Auxiliary relay - Fixed/Rate-of-Rise heats • White color • Includes mounting base • perating temperature range: 32°F to 100°F O (0°C to 37°C) Ordering Information Description Operating Voltage Current Current (Standby) (Alarm) Photoelectric Sensitivity Drift Reset Compensation Field Wire Time Adj. Size Photoelectric Smoke Smoke with Fixed Temp and ROR Heat Smoke with Heat and Aux Relay Smoke with Heat and Sounder

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Conventional Fire Alarms Smoke Detectors 500 Series Accessories Description Replacement optical Chambers (pkg. of 10) Approx. Shipping Weight (lb.) FIRE ALARMS

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