Multi-Criteria Photo / Thermal / Infrared Detector


General Description
TR-PTIR-W and TR-PTIR-IV are intelligent, multi-criteria detectors that combine photoelectric, thermal, and infrared (PTIR) sensors in one unit to sense multiple components of a fire. This approach enables enhanced sensitivity to real fire with heightened immunity to nuisance particulates.


Multiple sensors and communication can greatly reduce nuisance alarms compared to single sensing methods. Sophisticated algorithms maximize the advantages of all four sensor types creating our best detection strategy offering heightened immunity to nuisance particulate and enhanced sensitivity to real fire.


• Photoelectric sensor detects airborne particles associated with smoke.
• Thermal sensor detects heat and rate-of-rise (135°F fixed temperature threshold).
• Infrared sensors discern light patterns in the environment as an additional data point for alarm determination.


This ability to reject certain nuisance alarm triggers, such as theater smoke, supports the use of the detector in applications where moderate to heavy nuisance conditions exist that might cause single sensing detectors to trigger a false alarm.


The PTIR detector meets both UL 268 7th edition and UL 521 listing requirements and can indicate distinct smoke and heat alarms. This dual nature supports a local alarm setting for photoelectric detection and a general evacuation setting based on thermal detection. This can minimize work interruptions in multi-level buildings.

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• Multi-criteria detection
• Analog communications
• Low standby current
• Rotary address switches
• Dual LEDs for 360°visibility
• New modern profile
• Expanded color options
• UL 268 7th Edition and UL 521 Listed


Height: 2.0 inches (51 mm) installed in TR-B300-6 base Diameter: 6.2 inches (156 mm) installed in TR-B300-6 base; 4.1 inches (104 mm) installed in
TR-B501-WHITE/-IV/-BL base
Weight: 3.4 oz. (95 g)
Operating Humidity Range: 15% to 90% Relative Humidity, Non-condensing
Operating Temperature Range: 32°F to 100°F (0°C to 38°C)
Air Velocity: 0 to 300 ft./min. (0 to 91.4 m/min.)


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 Current: 4.5 mA @ 24 VDC (one communication every 5 seconds with amber LED solid on)
Isolator Load Rating: 0.0063


The devices in this datasheet meet the standards of UL 268 7th Edition.


The listings and approvals below apply to the TR-PTIR-W nd TR-PTIR-IV. In some cases, certain modules may not be listed by certain approval agencies, or listing may be in process. Consult the factory for the latest listing status.

UL Listed

FM Approved


TR-PTIR-W: Multi-criteria photoelectric, thermal and infrared smoke detector, bright white color.
TR-PTIR-IV: Multi-criteria photoelectric, thermal and infrared smoke detector, ivory color


TR-B501-WHITE: 4″ Mounting base, white
TR-B501-IV: 4″ Mounting base, ivory
TR-B501-BL: 4″ Mounting base, black
TR-B300-6: 6″ Flanged mounting base, white
TR-B300-6-IV: 6″ Flanged mounting base, ivory
TR-B200S-WH: Intelligent addressable sounder base, white
TR-B200S-IV: Intelligent addressable sounder base, ivory
TR-B200S-LF-WH: Intelligent addressable sounder base, low-frequency, white
TR-B200S-LF-IV: Intelligent addressable sounder base, lowfrequency, ivory
TR-B224BI-WH: Isolator base, white
TR-B224BI-IV: Isolator base, ivory
TR-B224RB-WH: Relay base, white
TR-B224RB-IV: Relay base, ivory


TR-RA100Z: Remote LED annunciator

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