Product Overview

The SK-PHOTO-W Intelligent Smoke Detector combines a contemporary aesthetic with advanced sensing performance, offering an updated design that meets modern architectural and code requirements. Engineered for efficient installation and long-term maintenance, the detector provides reliable smoke detection using a refined optical sensing chamber capable of identifying smoke from a broad range of combustion sources.

This updated model serves as a direct replacement for earlier SK-PHOTO detectors while introducing enhanced programmability and monitoring features. Sensitivity levels can be configured through the fire alarm control panel and are continuously supervised to ensure optimal operation. With full addressability, set using rotary decimal switches, the detector allows precise device identification, enabling targeted maintenance when the chamber becomes contaminated.

The SK-PHOTO-T-W adds fixed-temperature thermal sensing at 135°F (57°C) using dual electronic thermistors, offering combined smoke and heat detection. The SK-PHOTO-R-W variant includes remote test capability designed for use with compatible duct detector housings, supporting simplified testing procedures.

Key Features

Designed to comply with UL 268 7th Edition requirements
Modern, low-profile design suitable for contemporary installations
Stable communication protocol with enhanced noise immunity
Individually addressable device identification
Rotary decimal addressing (refer to Silent Knight control panel documentation for capacity)
Two-wire SLC connection
LED indicators provide 360° visibility; LEDs flash green when polled and turn solid red in alarm
Continuous monitoring of programmed sensitivity settings
Built-in device-type identification for seamless system integration
Remote testing capability from the panel
Functional test switch activated via external magnet
Walk-test mode with address display feedback
Low standby current for energy-efficient operation
Integrated tamper-resistant mechanism
Suitable for surface mounting or installation in electrical boxes
Sealed against back pressure for reliable duct performance
Plug-in base design simplifies installation and servicing
Multiple color options available
SEMS screws on the base for streamlined wiring
Optional remote single-gang LED accessory
Optional sounder, relay, and isolator bases available

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Warranty Terms

SS2479NT-EN STI

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