The SILENT-KNIGHT-5128 is a fire communicator that provides four fully supervised channel inputs to monitor UL listed fire alarm systems.

The 5128 comes in a vinyl and acrylic enclosure for mounting in the fire alarm control panel (FACP) cabinet and the unit can report AC power trouble using a dry contact active high voltage input.

UPC: 783196001142
Also known as: SK-5128

Technical Specifications:
Dimensions: 4" W x 8.75" H x 1.25" D ( 10.2 W x 22.2 H x 3.2 D cm)
Color: Black
Weight: 2 lbs (0.907 kg)
Watchdog Response: 50 sec. max
AC Monitor Input (5129 only): AC trouble output from FACP or 120 VAC
Dry Contact Current: 4.7 VDC, 6 mA max
Active High Current: 15 mA max
Channel Inputs: 18 – 30 VDC
Alarm Current without Annunciator: 154 mA @ 24 VDC max
Alarm Current with Annunciator: 227 mA@ 24 VDC max
Standby Current without Annunciator: 84 mA@ 24 VDC max
Standby Current with Annunciator: 143 mA@ 24 VDC max
Total DC Load: 84 mA @ 24 VDC max
Primary DC: 18 – 40 VDC
Primary AC: 120 VAC, 60 Hz, 45 mA