Key Features

  • Improved false alarm immunity
  • Tri-colour LED offering red, green and amber colours
  • Rotary decade address switches
  • Pure white colour to compliment modern buildings
  • New base design to compliment the detector


System Sensor addressable fire detection systems use an advanced protocol to deliver greater control, configurability and device management to provide far greater flexibility than ever before.

System Sensor Addressable Optical Smoke Detectors have an entirely reimagined detection chamber design that delivers improved responsiveness, reduced sensitivity changes caused by settling dust and reduces false alarms caused by insects and other debris. 

These optical smoke detectors use sophisticated processing circuitry that incorporates smoothing filters to help eliminate transient environmental noise conditions that can be the cause of unwanted alarms.

System Sensor Addressable Optical Smoke Detectors are managed by integrated software that runs sophisticated algorithms to further improve resilience to false alarms and improve detection speed. 

The detector unit has two, integral, tri-colour LEDs that provide 360° local visual indication of the device status. The LEDs are programmable with static or blinking red, amber and green status indications available.

System Sensor detectors are environmentally friendly and meet the WEEE and RoHS legislative requirements, minimising end of life disposal costs, and are mechanically and electrically backwards compatible with existing Series 200 plus devices.



Tech Specs

Operating Voltage Range15 to 32Vdc
Maximum Standby Current200μA at 24VDC (no communications) / 300μA at 24VDC (LED blink enabled, once every 5s)
LED Currentred: 3.5mA at 24VdcGreen: 7.0mA @ 24VdcYellow: 10.5mA @ 24Vdc
Remote Output Voltage22.5Vdc @ 24Vdc
Remote Output Current10.8mA @ 24Vdc
Additional loop resistance using the B501APtyp 20mohm (max 30 mohm)
Operating Voltage Range15 to 28.5Vdc
Isolation Current Range15mA at 24VDC
Maximum Continuous Current1A (Switch Closed)
Temperature Range30°C to +80°C
Humidity10 to 93% relative Humidity (non-condensing)
Height52mm installed in B501AP base
Diameter102mm installed in B501AP base
Weight97g (inc base)
Max Wire Gauge for Terminals2.5mm2

Do not install detectors in locations where normal ambient temperature exceeds 50°C



Eurofyre is an authorised distributor of Honeywell and we support the entire Morley IAS and System Sensor range of products. We offer expert advice and supply all aspects of fire detection systems including excellent before and after-sale support.

Contact us to receive competitive trade discounts or apply online for a credit account.

System Sensor Addressable Optical Smoke Detector with Base

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System Sensor Addressable Optical Smoke Detector

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System Sensor Addressable Optical Smoke Detector, Isolator

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