Fire-Lite SD365T Addressable Photoelectric Smoke/Heat Detector

The Fire-Lite SD365T is an addressable photoelectric smoke detector with an integrated 135 F (57 C) fixed-temperature heat sensor. Designed for Fire-Lite addressable fire alarm control panels, it connects to a 2-wire SLC, uses rotary decimal switches for individual device addressing, operates from 15 to 32 VDC, and provides 2 onboard LEDs for communication and alarm status indication.

Fire-Lite SD365T Addressable Photoelectric Smoke Detector

The Fire-Lite SD365T is a low-profile intelligent detector that combines photoelectric smoke detection with 135 F (57 C) fixed-temperature thermal sensing in a single addressable device. It is designed exclusively for compatible Fire-Lite addressable fire alarm control panels using the LiteSpeed protocol. Each detector receives an individual address through onboard rotary decimal switches, allowing the fire alarm control panel to identify the specific detector reporting an alarm or system condition.

The SD365T uses an enhanced optical sensing chamber with a factory preset nominal sensitivity of 1.5% per foot obscuration. The detector reports its type and operating status to the control panel through the signaling line circuit, while 2 onboard LEDs blink when the device is polled and latch on during an alarm condition. A built-in magnetic test switch, panel-initiated remote testing, tamper-resistant feature, removable cover, and insect-resistant screen simplify inspection and maintenance.

The detector operates from 15 to 32 VDC with a maximum average standby current of 200 A at 24 VDC and a maximum activated current of 4.5 mA at 24 VDC. The SD365T connects through a 2-wire SLC and plugs into a separate compatible detector base, allowing the sensor to be removed without disturbing field wiring. Compatible mounting options include standard B300-6 and B501 bases as well as selected relay, isolator, and sounder bases.

The Fire-Lite SD365T operates from 32 F to 100 F (0 C to 38 C) at 10% to 93% non-condensing relative humidity. The detector is 2 inches high, with its installed diameter determined by the selected mounting base, and weighs approximately 3.4 oz. The SD365 Series is UL/ULC Listed under S1059, FM Approved, CSFM listed, and designed to meet UL 268 7th Edition requirements for commercial addressable fire detection applications.