SYSTEM SENSOR SS-PHOTO Intelligent Smoke Detector

The System Sensor SS-PHOTO Intelligent Smoke Detector is an addressable photoelectric sensor designed for compatible intelligent fire alarm control panels. Its redesigned optical sensing chamber detects smoke from a broad range of combustion sources, while analog communication allows the control panel to continuously evaluate smoke density and detector sensitivity.

The SS-PHOTO supports SS, LiteSpeed, and SK protocol systems and provides individual Point ID identification through rotary address switches.

Programmable Sensitivity

The SS-PHOTO provides programmable smoke sensitivity through compatible fire alarm control-panel software.

Published sensitivity ranges include:

Open Area: 2.86–5.0%/ft

Special Application: 0.5–2.86%/ft.

Detector sensitivity is continually monitored and reported to the compatible fire alarm control panel.

LED Status Indication

The SS-PHOTO incorporates dual LEDs for 360-degree status visibility.

Published operation includes:

Normal Communication: Green LED blink

Alarm: Red LED steady

Additional Status: Amber LED indication.

The exact LED behavior can depend on the connected fire alarm control panel and system programming.

Electrical & Communication Information

Operating Voltage: 15–32 VDC

Operating Current at 24 VDC: 200 µA

Maximum Alarm Current: 2 mA at 24 VDC

Maximum Current: 4.5 mA at 24 VDC

Communication Interval: Approximately every 5 seconds

Protocols: SS / LiteSpeed / SK

Addressing: Rotary switches.

Compatible Detector Bases

The SS-PHOTO is a plug-in detector requiring a compatible base. Manufacturer documentation lists options including:

B501-WHITE: 4-inch standard base

B300-6: 6-inch flanged base

B200S-WH: Addressable sounder base

B200S-LF-WH: Low-frequency sounder base

B224RB: Relay base

B224BI: Isolator base