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Notifier FSP-851 Intelligent Plug-in Photoelectric Smoke Detector

211 in stock
90 Days
- +

Questions (4)

What is the recommended spacing for the Notifier FSP-851?
In low airflow applications with smooth ceiling, space detectors 30 feet (9.144m) for ceiling heights 10 feet (3.148m) and higher, per NFPA 72.
What is the operating voltage for the Notifier FSP-851?
Voltage Range: 15-32 volts DC peak
What if I need to return this?
All products are covered by our 90-day warranty and come with a prepaid UPS return label and RMA form. Returning products has never been this easy.
What if I need support?
Our friendly team is on hand with expert advice and assistance. Contact us Mon-Fri 8am-8pm by phone (888.303.2656), by email ( or using our online chat. Responses within 1 business day (if not sooner!)

Product Description

NOTE: This part is discontinued by the manufacturer. Replace with: FSP-951(white) or FSP-951-IV(ivory)

The Notifier FSP-851 Smoke Detector is a replacement photoelectric smoke detector head compatible for use with all Notifier Intelligent Fire Alarm Control Panels.

Notifier 851 Series smoke detectors can be used to replace the 751 Series plug-in detectors for legacy applications.

B210LP Standard U.S. flanged low-profile mounting base.
B710LP Standard replacement flanged low-profile mounting base.
B501 Standard European flangeless mounting base.
B200S Intelligent, programmable sounder base
B200SR Intelligent sounder base - Replaces B501BH series bases in retrofit applications.
B224RB Plug-in System Sensor relay base.
B224BI Plug-in System Sensor isolator detector base.
NOTE: All base types require an electrical backbox which is at least 1.5" (3.81 cm) deep.

NOTE: A version of this item for use in Canada is available.
Please note: All parts should be installed and tested by a certified fire alarm company.