: Guangzhou FTD Audio Electronics Limited

PA system Voice alarm system professional manufacturer

Public address System Use Volume Control with Relay

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Guangzhou FTD Audio Electronics Limited

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Public address System Use Volume Control with Relay

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Public address System Use Volume Control with Relay

Features: PA (Public address) system use volume control with relay. The volume controller is used to adjust the loudspeaker output in the room. The volume controller is used to keep same output level ...

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