Honeywell Silent Knight SK-ISO Isolator Module

Product Description

The Honeywell Silent Knight SK-ISO is a loop isolator module designed to protect addressable fire alarm signaling line circuits (SLC) from short-circuit faults. When a short develops on an SLC loop, the SK-ISO automatically isolates the affected segment, allowing the remainder of the loop to continue operating normally. This prevents a single wiring fault from disabling an entire initiating device circuit. The module is installed inline on addressable fire alarm loops and is typically placed and programmed by licensed fire alarm technicians during system installation or service.

The SK-ISO is used in addressable fire alarm systems where loop integrity and fault tolerance are required by code or system design. It is suited for commercial and institutional installations where maintaining partial-loop functionality during a fault condition is critical. The module is placed between addressable devices on the SLC to segment the circuit and minimize the impact of short-circuit events on overall system performance.

Key Features

• Automatically isolates short-circuit faults on addressable SLC loops
• Allows unaffected loop segments to remain operational during a fault
• Designed for use as a fire control accessory in addressable fire alarm systems
• Sold individually as a single unit for targeted loop placement

Compatibility

Designed as an OEM-style replacement and new-installation isolator module for addressable fire alarm signaling line circuits. No specific compatible model numbers were provided in the available product data.

Installation Notes

Installation must be performed by a licensed fire alarm technician in accordance with NFPA 72 and all applicable local codes. De-energize the affected SLC loop and follow the system panel manufacturer lockout procedures before wiring the module into the circuit. Consult the SK-ISO product manual and the fire alarm control panel documentation for proper placement intervals and address configuration requirements.