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B404B Fiches technique(PDF) 1 Page - Systemsensor advanced ideas. |
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B404B Fiches technique(HTML) 1 Page - Systemsensor advanced ideas. |
1 / 4 page Model 2451 with B404B/B404BT and RTC Remote Test Kit Product Overview Low standby current Two LEDs “blink” in standby Detector head plugs easily into base Field adjustable sensitivity Built-in test switch Field sensitivity metering of detector to meet the requirements of NFPA 72 120VAC and 24VAC/DC bases with built-in shorting spring Built-in tamper-resistant feature Designed for mounting on standard electrical box SEMS screws for easy wiring and positive wire retention Removable cover and insect screen for field cleaning H V A C S Y S T E M S M O N I T O R I N G Duct Smoke Detector for Special Applications UL 268A (Requires RTC accessory) 2451 with B404BT and RTC (Includes the RTS451) The System Sensor 2451 photoelectronic smoke detector is UL listed to UL 268A specifically for use in no-flow/low-flow air-handling sys- tems. It’s designed for installations where a standard Venturi principle duct smoke detector is unsuitable. This is the perfect combination for installation in ducts where the air velocity is below 500 fpm or for duct sizes as small as 8 inches in diameter. Pendant mounted in a standard electrical box within the duct, the twist-in/twist-out head allows easy removal from the base for quick cleaning and maintenance. The detec- tor can be combined with the System Sensor B404B 120VAC base or the B404BT 24VAC/DC base. Remote testing is accomplished using our Remote Test Coil accessory that includes the RTS451. The APA451, Remote Annunciator with Piezo Alarm, can also be connected to pro- vide an audible and visible indication of smoke detector status. Specifications Operating Voltage/ Alarm current Mounting base dependent (see chart) Standby current 120 mA maximum Sensitivity 3% ± .7% / ft. Weight 0.5 ib. (277 g) Size 3.2˝/8.1 cm height 6.2˝/15.8 cm diameter Construction Flame retardant Noryl plastic Operating Temperature 32° to 120°F (0° to 49°C) Humidity Range 10 to 93% RH non-condensing Air Velocity Rating 0 to 3000 fpm maximum |
Numéro de pièce similaire - B404B |
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Description similaire - B404B |
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