The product is designed to connect the sound warning device (electric siren C-40, C-28, etc.) by remote control commands to three-phase AC mains 230/400 V, if the power supply voltage of the sound warning device - three-phase AC mains 230/400 V or to single-phase AC mains 230 V, if the power supply voltage of the sound warning device - single-phase AC mains 230 V.
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