Specifications
Voltage 15 to 32 VDC, from Control Panel IDC
Standby Current 100 A @ 24 VDC
Alarm Current, 2-Wire
Operation
Up to 86 mA maximum, exact current is determined by alarm current limiting of
connected IDC (initiating device circuit)
Alarm Current, 4-Wire
Operation 24 mA typical @ 24 VDC
Auxiliary Relay Ratings Refer to page 3 under Product Selection
Rate-of-Rise
Temperature Alarm**
 20° F/min (11° C/min), only in effect at temperatures above 90° F (32° C)
Fixed Temperature Alarm 135° F (57° C)
UL Listed Temp. Range** 32 F to 100 F (0 C to 38 C)
Operating Temp. Range 15 F to 100 F (-9 C to 38 C)
Storage Temp. Range 0° to 140° F (-18° C to 60° C)
Smoke Obscuration
Sensitivity 2.8%/ft Nominal, per UL268
Air Velocity Range 0-2000 ft/min (0-610 m/min)
Humidity Range 10% to 95% RH from 32 F to 122 F
(0 C to 50 C)
Color Frost White
Dimensions 4-7/8” Dia. x 2” H, mounted in base
(124 mm x 51 mm), refer to p.3 for detail
** Always locate this and all rate-of-rise heat detection devices away from
extremes of temperature fluctuation.

Specifications
Voltage 15 to 32 VDC from Fire Alarm Control Panel IDC
Standby Current 100 A @ 24 VDC Alarm Current, 2-Wire
Operation Up to 86 mA maximum, exact current is determined by alarm
current limiting of connected IDC Alarm Current, 4-Wire
Operation 24 mA typical @ 24 VDC
Auxiliary Relay Ratings Refer to page 2 under Product Selection
Air Velocity Range 0-2000 ft/min (0-610 m/min)
UL Listed Temp. Range 32° to 100° F (0° to 38° C)
Operating Temp. Range 15° to 122° F (-9° to + 50° C)
Storage Temp. Range 0° to 140° F (-18° C to 60° C)
Humidity Range
10% to 95% RH from 32° to 122° F
(0° to 50° C) non-condensing
Color Frost White
Dimensions
4-7/8” Dia. x 1-7/8” H, mounted in
base (124 mm x 48 mm); refer to page 3 for detail

General features
• Automatic identification provides default sensitivity when substituting
sensor types
• Integral red LED for power-on, pulsing, or alarm or trouble, steady on
• Locking anti-tamper design mounts on standard outlet box
• Magnetically-operated functional test

General features
• Ceiling or wall mounting
• Listed to UL 268 7th Edition and ULC-S529
• NEMA 1 rated. See TrueAlarm analog sensing product selection chart
for more information.
• Louvered smoke sensor design enhances smoke capture by directing
flow to chamber. Entrance areas are minimally visible when ceiling
mounted
• Designed for EMI compatibility
• Magnetic testing
• Different bases support a supervised or unsupervised output relay,
or a remote LED alarm indicator

Features
Accurate and reliable heat detection for
protection of property**
UL listed to Standard 521 as a rate compensated
heat detector
Fixed temperature operation is suitable for most
applications:
 Thermistor based design is inherently rate
compensated due to minimal thermal lag
 Available for 135° F (57° C) or 200° F (93° C)
 UL spacing distance is 70 ft (21.3 m)
Available with rate-of-rise temperature detection:
 Dual thermistor rate-of-rise operation
 For use where anticipated ambient temperature
changes are less than 6° F/minute (3.33° C/minute)
 UL spacing distance is 70 ft (21.3 m)

Features
Accurate and reliable heat detection for
protection of property**
UL listed to Standard 521 as a rate compensated
heat detector
Fixed temperature operation is suitable for most
applications:
 Thermistor based design is inherently rate
compensated due to minimal thermal lag
 Available for 135° F (57° C) or 200° F (93° C)
 UL and ULC spacing distance is 70 ft (21.3 m)