Copyright © 2019 Nortek Security & Control LLC 27Control Panel Wiring DiagramThe following diagram shows the Control Panel wiring.Control Panel Wiring DiagramALL outputvoltages areClass 2Terminal 1 onlyprovides power whenthe Control Panel’spower supply isconnected to anAC power sourceCONTROLPANEL1 – 14VDC Power Input (+)2 – 14VDC Power Input (–)3 – COM4 – Bell (+)5 – Bell (–)6 – ZONE 17 – ZONE 28 – COMOBSERVE POLARITYwhen connecting thePower SupplyPlug-in 14 VDC1.7 AMPSwitchingPower SupplyPiezoSirenSupervisedBell Output14 VDC@ 500 mAMaximum2.2 KNormallyClosedContact2.2 KNormally ClosedContactUL NOTE: Wiring forall wired sensorsand annunciatorsmust use UL Listedlow voltage Class 2or better grade wire.Sensor and displayvoltages must complywith Class 2 lowvoltage requirementsEnd-of-LineResistorsareoptionalonhardwireloopsOpenCollectorOutput250 mA@ 16 VDCMaximumExamplehookupshowingan armedLED. TheOpen Colectoroutput can beprogrammedto activateduring variousconditions.1 KLED1 2 3 4 5 6 7 8