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H355(A) Series Intelligent Addressable Thermal Detectors

Product Description

The Fire•Lite Alarms H355(A) Series thermal detectors are addressable sensors that use a state-of-the-art thermistor sensing circuit for fast response. These sensors provide openarea protection and are intended for use with Fire•Lite’s addressable Fire Alarm Control Panels (FACPs). The H355(A) and H355R(A) sensors provide fixed temperature alarm detection at 135°F (57°C). The H355R(A) sensor also responds to rate-of-rise conditions of greater than 15°F (8.3°C) per minute. The H355HT(A) is a fixed high-temperature detector that activates at 190°F (88°C). These thermal detectors provide addressable property protection in a variety of applications. Two LEDs on each sensor light to provide a local, visible sensor indication. Remote LED annunciator capability is available using an optional accessory, the RA100Z

Key Features

  • Two-wire SLC loop connection
  • Unit uses base for wiring
  • Addressable by device
  • Rotary, decimal addressing: 01 – 159 with MS-9600 series, 01 – 99 with MS-9200 series.
  • Sleek, low-profile, stylish design
  • State-of-the-art thermistor technology for fast response.
  • Integral communications and built-in device-type identification
  • Built-in tamper resistant feature.
  • Built-in functional test switch activated by external magnet
  • Factory preset at 135°F (57°C) for the H355(A) and H355R(A); 190°F (88°C) for the H355HT(A).
  • Rate-of-rise triggers at 15°F (8.3°C) per minute for the H355R(A)
  • 360°-field viewing angle of the visual alarm indicators (two bicolor LEDs). LEDs blink red in Normal condition and turn on steady red in Alarm.
  • Visible LEDs “blink” every time the unit is addressed.
  • Sealed against back pressure
  • SEMS screws for wiring of the separate base

Product Line Information

  • H355: Intelligent thermal sensor; 135° F (57° C); B210LP base included
  • H355A: Same as H355 but with ULC Listing; B210LPA base included
  • H355R: Same as H355 with rate-of-rise feature; B210LP base included.
  • H355RA: Same as H355R but with ULC Listing; B210LPA base included.
  • H355HT: Intelligent fixed high-temperature thermal detector; 190° F (88° C); B210LP base included.
  • H355HTA: Same as H355HT but with ULC Listing; B210LPA base included.
  • B210LP(A): Plug-in detector base (included); 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
  • B200SR(A): Intelligent sounder base capable of producing sound output with ANSI Temporal 3 or continuous tone. Replaces B501BH series bases in retrofit applications
  • B224RB(A): Plug-in System Sensor relay base. Screw terminals: 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 bases (see DF-52389).

Listings and Approvals

Listings and approvals below apply to the H355(A) Series detectors. In some cases, certain modules may not be listed by certain approval agencies, or listing may be in process. Consult factory for latest listing status.
• UL Listed: S2517.
• ULC Listed (models H355A, H355RA, H355HTA).
• CSFM approved: 7270-0075:0195.
• FM approved.
ContructionThese detectors are constructed of off-white fire-resistant plastic. The H355(A) Series plug-in intelligent thermal detectors are designed to commercial standards and offer an attractive appearance.


H355(A) Series plug-in intelligent thermal detectors use a detachable base to simplify installation, service and maintenance. Installation instructions are shipped with each detector. 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 DF-60059. NOTE: 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 only