Aan de wand gemonteerde visuele waterdichte intercom
304 stainless steel, anti damage and easy to install.
Wall mounted and build in hearing aidsn.
The wire was made by Teflon, oil resistance, acid resistance and alkali resistance.
Automatic dialing function: Press the emergency button, and it will automatically dial the designated number for you after 3 to 5 seconds.
Usage: Railway, Highway, Bank, University, Hotel, etc
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