Pro Series Master Station
The PS 279 Masterstation is a 2-channel intercom station with a built-in power supply, housed in a 19"/1U metal case. It provides all the features necessary for a two channel communication system, in conjunction with the PRO Series beltpacks and speaker stations.

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Pro Series Belt Packs
There are two Series' of beltpacks which are either housed in a strong aluminium case or an ABS case with a sprung metal belt clip. Each series consists of one- or two channel portable intercom stations and an one channel beltpack with auxiliary input . They are powered via the intercom party line from a PRO Series master station or separate power supply unit. All electronic circuitry on the metal beltpacks is based on surface mount
technology, offering maximum durability and ease of technical service and
for the ABS beltpacks conventional parts (not surface mount) are used.

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Pro Series Speakerstations
This series of Speaker Stations provide single, dual, four or six channel table top intercom stations, fitted with an electret 'noise cancelling' gooseneck microphone and loudspeaker. The models with suffix 'RM' are identical except the gooseneck microphone is replaced with a small built-in electret microphone.

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Pro Series Interfaces
There are three different interfaces.
The PS 260 (shown) which is designed to interface an ASL intercom system to external audio equipment or to a 4-wire intercom systems.
The PS 155 is a tabletop, single channel audio interface between simplex wireless intercom systems and ASL partyline intercom systems.
The PS 150 which interfaces an ASL intercom system to a telephone or 2-wire system and is used to allow communication between an ASL intercom network
and a standard telephone, or between two ASL intercom networks via a telephone line.
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Power Supplies
The series consists of a two- and a six channel Power Supply as well as a 2 channel Booster Power Supply for use as an auxiliary 2-channel power supply unit, should the main Power Supply of an intercom network be insufficient to
drive the required number of stations. Both Power Supplies provide all the features necessary for a communication system in conjunction with the PRO Series beltpacks and speaker stations.

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