Silent Knight SK-ZONE Two-Wire Interface Module

The Silent Knight SK-ZONE is an addressable two-wire interface module for Silent Knight fire alarm control panels that converts a conventional two-wire detector zone to the SLC loop. It supervises one full zone of UL-compatible two-wire smoke detectors, monitors the external power supply connection, and reports normal, open, or alarm status back to the FACP. Key Specifications: Type: Addressable two-wire interface module Core Function(s): Interfaces and monitors one zone of compatible conventional two-wire smoke detectors Loop/Protocol: Silent Knight SLC Power: 15 to 32 VDC operating voltage; external power supply current 90 mA alarm and 13 mA standby at 24 VDC; 5.1 mA maximum current with LED on Indicators/UI: Panel-controlled status LED flashes green in normal condition and lights solid red in alarm Circuit Configuration: Supports Style B and Style D wiring Addressing: Rotary address switches Electrical: 3.9K Ohm end-of-line resistance; 25 Ohms SLC loop impedance; 25 Ohms maximum initiating device circuit wiring resistance Mounting: Mounts to a standard 4 inch square electrical box with a minimum depth of 2-1/8 inches Physical: 4.5 inches H x 4 inches W x 1.25 inches D Environmental: 32 F to 120 F; 10% to 93% non-condensing Compatible Accessories: SMB500 - 4 inch square surface-mount electrical box System Compatibility: Compatible Silent Knight fire alarm control panels that support SK addressable modules