Locally control equipment and monitor alarmsin your AV systems via dry contacts when connected to a Premium+ PDU with RackLink™ More than power distribution, the Premium+ PDU with RackLink™ is the most advanced - yet simplest - to use IP control solution for Remote System Management in the industry. Developed around a platform that has been proven on the most secure networks in the world, this next-generation power distribution unit provides unmatched monitoring, control, logging, security and power protection capabilities available for demanding AV applications. The RackLink™ technology allows you to control locally or virtually through 3rd party AV control systems, cloud platforms and SNMP for flexible management that is smarter, faster and reduces service costs. Connect equipment (door handles, alarms, fans, etc.) for control Daisy chain up to 32 modules for limitless design Two active dry contacts powered by 12V Five digital Normally Closed (NC) or Normally Open (NO) contact closures which require customer-provided NC or NO switches Each of the five ports (channels) can be independently set to NC or NO, factory default is NC