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Four-Channel Power Supply

Channel Status Indicators

The indicators are green for normal operation and red to warn of an overload or short circuit. The system resets itself once the overload or short circuit is located.

Connector to ES-4000A

This connector carries power to the ES-4000A expansion station, and carries the four audio channels of the ES-4000A. When an ES-4000A is connected to the PS-4001, each of the four channels of audio is “broken out” to the respective channel connector.

Intercom Channel Connectors

These connectors carry power to the intercom system and provide termination for the audio signal of each intercom channel.

Balanced and Unbalanced Selector Switch

Gives the user the choice to configure the unit for use in either an Audiocom (Balanced) or Clear-Com (Unbalanced) system. The default setting is for “balanced”.

Instantaneous Auto-Reset

Instantaneous Auto Reset (IAR), the newest technology in performance and safety, which uses a revolutionary new circuitry that dynamically monitors line fault conditions. Then, when the fault is removed, automatically brings individual power supply channels up.

Clear-Com Compatible

Channels 4 CH
Color Black
Depth 10.31" (261.9 mm)
Height 1.75" (44.5 mm)
Power Requirements 100 to 240 VAC, 50/60 Hz
Weight 2.49 lbs (1.13 kg)
Width 8.19" (208 mm)


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Telex is part of the Bosch Communications Systems family of brands, offering the world's most complete portfolio of professional audio and communications solutions.

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