
FSI-851(A)
FSI-851(A) in B210LP(A) Base
B210-1951.jpg
Intelligent Plug-In Ionization
Smoke Detector with FlashScan®
General
The FSI-851(A) intelligent plug-in ion detectors with integral
communication has features that surpass conventional detectors. Detector sensitivity can be programmed in the control
panel software. Sensitivity is continuously monitored and
reported to the panel. Point ID capability allows each detector’s address to be set with rotary, decimal address switches,
providing exact detector locations for selective maintenance
when chamber contamination reaches an unacceptable level.
The FSI-851(A) ionization detector incorporates a unique single-source, dual-chamber design to respond quickly and
dependably to a broad range of fires. FSI-851(A) detectors are
compatible with ONYX series and CLIP series intelligent Fire
Alarm Control Panels (FACPs).
FlashScan® (U.S. Patent 5,539,389) is a communication protocol developed by NOTIFIER that greatly improves the speed
of communication between analog intelligent devices and certain NOTIFIER systems. Intelligent devices communicate in a
grouped fashion. If one of the devices within the group has
new information, the panel’s CPU stops the group poll and
concentrates on single points. The net effect is response
speed greater than five times that of other protocols.
Features
• Sleek, low-profile design.
• Addressable-analog communication.
• Stable communication technique with noise immunity.
• Low standby current.
• Two-wire SLC connection.
• Compatible with FlashScan® and CLIP systems
• Rotary, decimal addressing (1-99 on CLIP systems, 1-159
on FlashScan systems).
• Optional remote, single-gang LED accessory, RA100Z(A).
• Dual LED design provides 360° viewing angle.
• Visible bicolor LEDs blink green every time the detector is
addressed, and illuminate steady red on alarm.
• Remote test feature from the panel.
• Walk test with address display (an address of 121 will blink
the detector LED: 12-(pause)-1) (FlashScan® systems
only).
• Built-in functional test switch activated by external magnet.
• Built-in tamper-resistant feature.
• Sealed against back pressure.
• Constructed of off-white plastic, designed to commercial
standards, and offers an attractive appearance.
• 94-5V plastic flammability rating.
• SEMS screws for wiring of the separate base.
• Optional relay, isolator, or sounder bases.
• Listed to UL 268.
DN-6934:B1
Intelligent/Addressable Devices
Specifications
Sensitivity: 0.5% to 2.5% per foot obscuration
Size: 2.0" (51 mm) high; base determines diameter.
– B210LP(A): 6.1" (15.5 cm) diameter.
– B501(A): 4.1" (10.4 cm) diameter.
– B200S(A): 6.875" (17.46 cm) diameter.
– B200SR(A): 6.875" (17.46 cm) diameter.
– B224RB(A): 6.2" (15.748 cm) diameter.
Shipping Weight: 5.4 oz. (153 g).
Operating Temperature: 0°C to 49°C (32°F to 120°F).
UL/ULC-Listed Velocity Range: ION: 0 – 1200 ft./min.
(365.76 m/min.).
Relative Humidity: 10% – 93% noncondensing.
ELECTRICAL SPECIFICATIONS
Voltage Range: 15 - 32 volts DC peak.
Standby Current (max. avg.): 300 μA
LED Current (max.): 6.5 mA @ 24 VDC (“ON”).
Installation
FSI-851(A) plug-in detectors use a separate base to simplify
installation, service, and maintenance. A special tool allows
maintenance personnel to plug in and remove detectors without using a ladder.
Mount base (all base types) on an electrical backbox which is
at least 1.5" (3.81 cm) deep. For a chart of compatible junction
boxes, see DN-60054.
NOTE: 1) Because of the inherent supervision provided by the
SLC loop, end-of-line resistors are not required. Wiring “T-taps” or
branches are permitted for Style 4 (Class “B”) wiring. 2) When
using relay or sounder bases, consult the ISO-X(A) installation
sheet I56-1380 for device limitations between isolator modules
and isolator bases.
DN-6934:B1 • 01/05/2012 — Page 1 of 2

Agency Listings and Approvals
These listings and approvals apply to the modules specified in
this document. In some cases, certain modules or applications
may not be listed by certain approval agencies, or listing may
be in process. Consult factory for latest listing status.
• UL Listed: S1115.
• ULC Listed: S1115 (FSI-851A).
• CSFM: 7271-0028:201.
• MEA: 321-02-E.
• Maryland State Fire Marshal: Permit #2140.
• BSMI: CI313066760014.
• U.S. Coast Guard: 161.002/42/1 (NFS-640); 161.002/50/0
(NFS2-640/NFS-320/NFS-320C, excluding B210LP(A)).
• Lloyd’s Register: 11/600013 (NFS2-640/NFS-320/NFS320C, excluding B210LP(A)).
• FM Approved.
Product Line Information
NOTE: “A” suffix indicates ULC Listed model.
FSI-851: Low-profile intelligent ionization sensor. Must be
mounted to one of the bases listed below.
FSI-851A: Same as FSI-851 but with ULC Listing.
INTELLIGENT BASES
NOTE: “A” suffix indicates ULC Listed model.
NOTE: For details on intelligent bases, see DN-60054.
B210LP(A): Standard U.S. flanged low-profile mounting base.
B210LPBP: Bulk pack of B210LP; package contains 10.
B501
(A): Standard European flangeless mounting base.
B501BP: Bulk pack of B501; package contains 10.
B200S
(A): Intelligent, programmable sounder base capable of
producing sound output in high or low volume with ANSI Temporal 3, ANSI Temporal 4, continuous tone, marching tone,
and custom tone.
B200SR
sound output with ANSI Temporal 3 or continuous tone.
Replaces B501BH series bases in retrofit applications.
B224RB
nals: up to 14 AWG (2.0 mm²). Relay type: Form-C. Rating: 2.0
A @ 30 VDC resistive; 0.3 A @ 110 VDC inductive; 1.0 A @
30 VDC inductive.
B224BI(A): Plug-in System Sensor isolator detector base.
Maximum 25 devices between isolator base.
ACCESSORIES
F110: Retrofit flange to convert B210LP(A) to match the
B710LP(A) profile, or to convert older high-profile bases to
low-profile.
F110BP: Bulk pack of F110; package contains 15.
F210: Replacement flange for B210LP(A) base.
RA100Z(A): Remote LED annunciator. 3 – 32 VDC. Mounts to
a U.S. single-gang electrical box. For use with B501(A) and
B210LP(A) bases only.
SMB600: Surface mounting kit.
(A): Intelligent sounder base capable of producing
(A): Plug-in System Sensor relay base. Screw termi-
M02-04-00:Test magnet.
M02-09-00: Test magnet with telescoping handle.
XR2B: Detector removal tool. Allows installation and/or
removal of detector heads from bases in high ceiling applications.
XP-4: Extension pole for XR2B. Comes in three 5-foot (1.524
m) sections.
T55-127-010: Detector removal tool without pole.
BCK-200B: Black detector covers; package contains 10.
WCK-200B: White detector covers; package contains 10.
NOTIFIER® and FlashScan® are registered trademarks of Honeywell
International Inc.
©2012 by Honeywell International Inc. All rights reserved. Unauthorized use
of this document is strictly prohibited.
This document is not intended to be used for installation purposes.
We try to keep our product information up-to-date and accurate.
We cannot cover all specific applications or anticipate all requirements.
All specifications are subject to change without notice.
For more information, contact Notifier. Phone: (203) 484-7161, FAX: (203) 484-7118.
www.notifier.com
Page 2 of 2 — DN-6934:B1 • 01/05/2012