System Sensor® 2451 1008108

The System Sensor® 2451 photo electronic smoke detector is UL listed to UL 268A specifically for use in no-flow/low-flow air-handling systems. 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 in 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 detector can be combined with the System Sensor® B404B 120 VAC base or the B404BT 24 VAC/ VDC 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 provide an audible and visible indication of smoke detector status.

System Sensor® Plug-In Smoke Detector, Photoelectronic Detection Method, Smoke Alarm, 10 to 93% RH Humidity Rating, 3 +/-0.7 % Sensitivity, LED Display, 3000 fpm Air Duct Velocity, 120 mA Standby Alarm Current, Flame Retardant Noryl Plastic, 32 to 120 deg F, 6.2 in Width, 3.2 in Height

• Reset by momentary power interruption locking alarm
• Low standby current
• Two LEDs blink in standby
• Field adjustable sensitivity
• Built-in test switch
• Field sensitivity metering of detector to meet the requirements of NFPA 72
• 120 VAC and 24 VAC/ VDC 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
• Detector head plugs easily into base

• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/System_Sensor_2451_Manual.pdf
• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/System_Sensor_2451_Specification_Sheet.pdf