The PK-7 power supply is housed in a rugged metal chassis and has the capacity to power up to 12 RS-701 headsets. It supplies 24 volts DC at 0.4 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 reverse polarity protection.

The PS-704 is a four-channel, single-rack-space intercom power supply that features Clear-Com’s “fail-safe” design for maximum reliability. The power supply delivers 2 amps at 30 volts, supplying power for one to four channels of intercom.

The PS-702 can supply up to 2 amps at 30 volts DC to two channels in a 1RU. This is sufficient to power up to 40 beltpacks,10 speaker stations, or 12 headset stations even under the most demanding conditions. Either channel is capable of supplying up to 1.2 amps. The full current capacity may be divided between the two channels.