Description
The Fire-Lite SD365-IV Intelligent Addressable Detector Head provides advanced photoelectric detection for compatible Honeywell Fire-Lite fire alarm systems. It features an enhanced optical sensing chamber, individual device addressing, and a low-profile ivory housing. In addition, its dual-protocol communication supports both LiteSpeed and CLIP system configurations.
Intelligent Photoelectric Detection
The Fire-Lite SD365-IV uses optical sensing technology to monitor airborne particles associated with developing fire conditions.
Its sensing chamber detects changes in light scattering as particles enter the detection area. The detector communicates its readings to a compatible fire alarm control panel.
Therefore, the control panel can evaluate conditions and initiate the appropriate programmed response.
This addressable technology also helps technicians identify individual device locations during maintenance and inspection.
LiteSpeed and CLIP Communication
The detector supports both LiteSpeed and Classic Loop Interface Protocol, commonly called CLIP.
LiteSpeed provides communication with compatible Fire-Lite addressable panels. Meanwhile, CLIP supports selected legacy systems that use the older communication protocol.
As a result, this ivory model offers flexibility for compatible system maintenance and replacement projects.
However, installers must confirm panel compatibility and protocol requirements before installation.
Rotary Decimal Addressing
Each detector head features rotary decimal switches for address configuration.
Installers assign a unique address according to the approved fire alarm system design. Supported control panels can accommodate addresses up to 159, depending on their capabilities.
Consequently, the control panel can identify the location of an activated detector.
Individual addressing also simplifies troubleshooting and maintenance.
Dual LED Status Indication
The detector includes two visible LED indicators.
Compatible control panels can configure the indicators to display red, green, or amber status information.
During normal communication, the LEDs may blink. During an alarm, the panel can illuminate them continuously.
Therefore, technicians can recognize communication, alarm, and maintenance conditions.
Key Features
- Intelligent addressable photoelectric detector head
- Honeywell Fire-Lite SD365 Series
- Ivory low-profile housing
- Enhanced optical sensing chamber
- LiteSpeed communication
- CLIP communication
- Rotary decimal address switches
- Individual device identification
- Dual multicolor LED indicators
- Optional RA100Z remote annunciator
- Magnetic functional testing
- Tamper-resistant mounting option
- Removable cover for maintenance
- Insect-resistant sensing chamber screen
- 15–32 VDC operating voltage
- Low standby current
- Compatible detachable mounting bases
- Designed for professional fire alarm installations
Electrical Specifications
The detector operates from 15 to 32 VDC through a compatible signaling line circuit.
Its typical operating current is approximately 200 microamps at 24 VDC. During alarm operation, the red LED current reaches approximately 2mA.
In addition, the maximum current reaches 4.5mA with the amber LED illuminated.
Therefore, installers should account for these requirements when calculating signaling line circuit capacity.
Compatible Mounting Bases
The detector uses a detachable mounting base for electrical connection and installation.
For example, the B300-6-IV provides a compatible ivory six-inch mounting option. The B501 family also offers compact base configurations.
Additional relay, isolator, and sounder bases may support approved applications.
However, the mounting base is a separate accessory unless the seller explicitly includes one.
Environmental Specifications
The detector operates from 32°F to 122°F (0°C to 50°C).
It supports relative humidity from 10% to 93%, non-condensing. In addition, its specified air velocity range extends up to 4,000 feet per minute.
Consequently, technicians should confirm environmental conditions before selecting the device.
Typical Applications
This intelligent detector head supports compatible commercial and institutional fire alarm installations.
Typical applications include offices, schools, hotels, healthcare facilities, warehouses, retail properties, and industrial buildings.
Its dual-protocol capability makes it particularly useful for maintaining existing Fire-Lite systems.
Moreover, its plug-in construction simplifies replacement when the existing mounting base remains compatible.
Installation and Compatibility
Before installation, verify the fire alarm control panel, SLC communication protocol, detector address, and mounting base.
Also, confirm the required sensitivity settings and environmental limits.
Qualified fire alarm professionals should install, configure, and test the detector head. Furthermore, technicians should follow Fire-Lite installation instructions and applicable fire alarm codes.
Overall, this intelligent addressable detector head provides optical fire detection for compatible Fire-Lite systems. Its enhanced sensing chamber, dual-protocol communication, rotary addressing, and low-profile design make it a practical option for professional maintenance and replacement projects.





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