- Description
- Specifications
Intelligent Addressable Photoelectric Smoke Detector with Two-Wire SLC Loop, Walk Test with Address Display, and Interchangeable Base System
The Fire-Lite SD365 is an intelligent addressable photoelectric commercial smoke detector that connects to the SLC loop on a two-wire circuit with stable, noise-immune communication. The advanced optical sensing chamber detects smoke across a wide range of combustion sources while meeting current code standards for sensitivity performance, and the factory preset 1.5% sensitivity threshold ensures consistent alarm response out of the box. At just 2 inches tall and 6.2 inches in diameter, the low-profile housing mounts flush to ceilings in finished commercial spaces without drawing attention.
The SD365 is part of the Fire-Lite intelligent detector family manufactured by Honeywell, and it uses an interchangeable base system that supports photoelectric, ionization, and thermal sensor heads along with optional relay, isolator, and sounder bases. The built-in magnetic test switch and walk-test mode with address display allow technicians to verify every detector on the loop without aerosol cans or panel interaction, and the removable cover with insect-resistant screen simplifies field cleaning. LED indicators blink when the detector is polled by the panel and latch solid during an alarm condition for instant visual identification.
Where the SD365 Fits
- Office buildings, corporate campuses, and high-rise towers where addressable detection is required by code for zone identification, the low-profile white housing blends into finished ceilings without impacting interior design, and the interchangeable base system allows future sensor type changes without replacing the detector head or rewiring the SLC loop
- Hospitals, schools, and government buildings where walk-test mode with address display lets fire alarm inspectors verify each detector during annual NFPA testing without disrupting occupied spaces, the magnetic test switch eliminates the need for aerosol cans in sensitive environments, and noise-immune SLC communication maintains reliable polling across long wire runs in large facilities
- Hotels, convention centers, and retail complexes where the photoelectric sensing chamber reduces nuisance alarms from kitchen steam and HVAC airflow compared to ionization detectors, the back-pressure sealed design resists false activations from air handling pressure changes, and the removable insect screen prevents contamination in environments where exterior doors open frequently
What the SD365 Delivers
- Intelligent Photoelectric Detection: Advanced optical sensing chamber with factory preset 1.5% sensitivity detects smoke from a wide range of combustion sources. Back-pressure sealed design resists false activations from HVAC pressure differentials. LED blinks when polled, latches solid in alarm for visual status identification.
- Two-Wire Addressable SLC Communication: Connects to the SLC loop on two wires with stable, noise-immune signaling. Low standby current minimizes loop power consumption across large detector counts. Reports individual device address to the fire alarm panel for pinpoint location identification during alarm events.
- Walk Test with Magnetic Activation: Built-in magnetic test switch activates walk-test mode with address display for field verification. No aerosol cans or panel programming required during inspection. Removable cover and insect-resistant screen for field cleaning and maintenance without replacing the detector.
- Interchangeable Base System: Supports separate bases with SEMS screws for photoelectric, ionization, and thermal sensor interchangeability. Optional relay, isolator, and sounder bases available. Surface mount or electrical box mounting. UL Listed (UL 268, UL 268A, UL 1059). 6.2-inch diameter, 2-inch height, 3.40 oz.
