SILENT KNIGHT   SK-PHOTO-W

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The Silent Knight® SK-PHOTO-W Series feature a modern design and expanded color options support a variety of contemporary aesthetic demands. In addition, each detector is constructed for exceptional installation and maintenance efficiency.

The SK-PHOTO-W Series intelligent plug-in smoke detectors are designed for both performance and aesthetics, and are direct replacements for the SK-PHOTO Series detectors. A new modern, sleek, contemporary design and enhanced optical sensing chamber is engineered to sense smoke produced by a wide range of combustion sources in accordance with more stringent code standards. The SK-PHOTO-W Series detector sensitivity can be programmed in the control panel software. Sensitivity is continuously monitored and reported to the panel. Point ID capability allows each detector’s address to be set with rotary, decimal address switches, providing exact detector location for selective maintenance when chamber contamination reaches an unacceptable level. Dual electronic thermistors add 135°F (57°C) fixed temperature thermal sensing on the SK-PHOTO-T-W. The SK-PHOTO-R-W is a remote test capable detector for use with DNR Series duct detector housings.

• Designed to meet UL 268 7th Edition
• Sleek and stylish contemporary design
• Stable communication technique with noise immunity
• Addressable by device
• Rotary, decimal addressing (Refer to the Silent Knight panel manuals for device capacity)
• Two-wire SLC connection
• LEDs blink every time the unit is polled
• 360° field viewing angle of visual alarm indicators (two bi-color LEDs); LEDs blink green in Normal condition and turn on steady red in Alarm
• Integral communications and built-in device-type identification
• Remote test feature from the panel
• Built-in functional test switch activated by external magnet
• Walk test with address display (an address of 121 will blink the detector LED 12-(pause)-1)
• Low standby current
• Built-in tamper-resistant feature
• Designed for direct-surface or electrical-box mounting
• Sealed against back pressure
• Plugs into separate base for ease of installation and maintenance
• Expanded color options
• SEMS screws for wiring of the separate base
• Optional remote, single-gang LED accessory
• Optional sounder, relay, and isolator bases

The SK-PHOTO-W Series plug-in intelligent thermal detectors use a separate base to simplify installation, service, and maintenance. Installation instructions are shipped with each detector.

Mount base (all base types) on an electrical backbox which is at least 1.5" (3.81 cm) deep. Because of the inherent supervision provided by the SLC loop, end-of-line resistors are not required. Wiring "T-taps" or branches are permitted for Class "B" wiring. When using relay or sounder bases, consult the SK-ISO installation sheet for device limitations between isolator modules and isolator bases.

Each SK-PHOTO-W Series detector uses one of the panel's addresses (total limit is panel dependent) on the Signaling Line Circuit (SLC). It responds to regular polls from the control panel and reports its type and the status. If it receives a test command from the panel (or a local magnet test), it stimulates its electronics and reports an alarm. It blinks its LEDs when polled and turns the LEDs on when commanded by the panel. The SK-PHOTO-W Series offers features and performance that represent the latest in smoke detector technology.