The PK-7 power supply is housed in a rugged metal chassis and has the capacity to power up to 30 SMQ-1 or DMQ-2 headsets. It supplies 24 volts DC at .4 amp to the system. The fully regulated, current-limited unit also provides proper termination for the intercom system. The PK-7 features both short-circuit and reversepolarity protection.
Three separate 3-pin XLR connectors are provided for intercom audio and power output to the headset stations. Use Y-type line
splitters on these connectors to attach additional headsets to the system.
The PK-7 power supply is UL and CSA listed.