2151

      The System Sensor 2151 low profile photoelectronic smoke detector is specifically designed to meet the performance requirements of fire detection/alarm systems.
      Here you can get some information about the 2151.First,it adopts low-profile construction.Secondly,it has an easy plug-in of the head to base.Bases are available for two-wire, four-wire, and 120 VAC four-wire operation. Thirdly,it has a tamper-resistant feature.Fourthly,it has a test switch.Fifthly,the detector is designed to provide open area detection which has 360°view angle of alarm LEDs.Sixthly,when installed in a two-wire base,it is compatible with FCI fire alarm control panels.Seventhly,audible sounder base (optional) is available.Eighthly,field metering of detector sensitivity may be performed with the aid of a voltmeter and Test Kit, Part No. MOD.Ninthly, 2151 has removable insect screen and cover for field cleaning.At last,it has insect-resistant screening (020"/.508 mm openings).
      The following is about 2151's specifications.Specifications.The Sensitivity is 3.0 %/ft (nominal).The Operating voltage  is from 8.5 to 35 VDC (24 VDC nominal).The maximum standby current is 120 uA. The operating temperature ranges from 32° to 120°F (0°to 49°C).The operating humidity is 10 % - 93 % relative humidity.The maximum air velocity is 3,000 feet per minute.