background image

3.   Devices are point addressable up to 159 addresses.
4.  The heat sensor operates as a programmable heat detector.
5.   Yearly maintenance, in accordance to NFPA 72, can use the built in Self-

Test functionality.

Intelligent programmable temperature sensors require compatible addressable 
communications to function properly. Connect these sensors to listed-compat-
ible control panels only.

WIRING GUIDE

All wiring must be installed in compliance with the National Electrical Code, 
applicable local codes and the Authority Having Jurisdiction. Proper wire 
gauges should be used. The installation wires should be color coded to limit 
wiring mistakes and ease system troubleshooting. Improper connections will 
prevent a system from responding properly in the event of a fire. Please note 
that installation distances, wiring styles and wire gauge requirements may 
vary for Self-Test sensors in comparison to standard sensors, please refer to 
the panel's SLC Wiring documentation for further information.
Remove power from the communication line before installing sensors.
1.   Wire the sensor base (supplied separately) as shown in the wiring 

diagram. (See Figure 2.)

2.   Set the desired address on the rotary dial switches. (See Figure 1.).
3.   Install the sensor into the sensor base. Push the sensor into the base 

while turning it clockwise to secure it in place.

4.   After all sensors have been installed, apply power to the control unit and 

activate the communication line.

5.  Test the sensor(s) as described in the TESTING section of this manual.

FIGURE 2. WIRING DIAGRAM

2

3

1

2

3

3

1

2

1

(–)

(+)

+

-

UL Listed Compatib

le

Control P

anel

CAUTION: Do not loop wire under 

terminal 1 or 2.  Break wire run to 

supervise connections.

CLASS A OPTIONAL WIRING

Remote 

Annunciator

(–)
(+)

RA

+

+

RA

+

+

RA

+

+

 

C0129-10

SPECIFICATIONS

Operating Voltage Range:  

15 to 32 VDC

Operating Current @ 24 VDC:  

200 uA (one communication every 5 seconds with green LED blink on communication)

Maximum Alarm Current: 

2 mA @ 24 VDC (one communication every 5 seconds with red LED solid on)

Maximum Self-Test Alarm Current: 

7 mA (Not be used for battery standby calculation as Self-Test will not work in auxiliary power mode)

Maximum Current: 

4.5 mA @ 24 VDC (one communication every 5 seconds with amber LED solid on)

Operating Humidity Range: 

10% to 93% Relative Humidity, Non-condensing

Installation Temperature:
   Set for fixed-temperature or rate-of-rise (ROR):  –4°F to 100°F (–20°C to 38°C)
   Set for high-heat: 

–4°F to 150°F (–20°C to 66°C)

Fixed Temperature Rating: 

135°F (57°C)

High Heat Temperature Rating: 

190°F (88°C)

Storage Temperature Range: 

-4°F to 140°F (-20°C to 60°C)

Height: 

2.0˝ (51 mm) installed in B300-6 Base

Diameter: 

6.2˝ (156 mm) installed in B300-6 Series Base; 4.1˝ (104 mm) installed in B501 Series Base

Weight: 

3.4 oz. (95 g)

UL 521 listed for Heat Detectors 
This sensor must be installed in compliance with the control panel system 
installation manual. The installation must meet the requirements of the Au-
thority Having Jurisdiction (AHJ). Sensors offer maximum performance when 
installed in compliance with the National Fire Protection Association (NFPA); 
see NFPA 72.
Before installing sensors, please read the system wiring and installation man-
ual thoroughly. This manual provides detailed information on sensor spac-
ing, placement, zoning, and special applications. Copies of these manuals are 
available from Notifier.

GENERAL DESCRIPTION

Model FST-951-SELFT is a field programmable intelligent sensors that uses a 
state-of-the-art thermistor sensing circuit for fast response. These sensors are 
designed to provide open area protection with 50-foot spacing capability as 
approved by UL 521. The intelligent temperature sensor can be programmed 
as either a 135°F fixed temperature sensor, a rate of rise and 135°F fixed tem-
perature sensor or a 190°F high temperature sensor through the Fire Alarm 
Control Panel (FACP). Its internal Self-Test unit and beaconing capability can 
test the detector to relevant requirements of NFPA 72.
Two LEDs on each sensor light to provide a local, visible sensor indication. 
Remote LED annunciator capability is available as an optional accessory 
(Part No. RA100Z). Rotary dial switches are provided for setting the sensor's 
address. (See Figure 1.) 

FIGURE 1. ROTARY ADDRESS SWITCHES

 

TENS

ONES

9

10

11

12

13

14

15

8

7

6

5

4

3

2

1 0

9

8

7

6

5

4

3

2

1 0

  

C0162-00

Notifier panels offer different feature sets across different models. As a result, 
certain features of the Intelligent Programmable Temperature Sensors may be 
available on some control panels, but not on others. FST-951-SELFT will sup-
port only FlashScan® protocol mode. 
The possible features available if supported by the control panel include:
1.   The sensor’s LEDs can operate in three ways—on, off, and blinking–and 

they can be set to red, green, or amber. This is controlled by the panel. 

2.   The remote output may be synchronized to the LED operation or con-

trolled independent of the LEDs. Please refer to the operation manual for 
the UL listed control unit for specific operation of these models

I56-6784-000

INSTALLATION AND MAINTENANCE INSTRUCTIONS

12 Clintonville Road

Northford, CT 06472-1653

Phone: 203.484.7161

FST-951-SELFT 

Intelligent Programmable Temperature 

Self-Test Sensors 

  

I56-6784-000 

 

 1/6/2021

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