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- Provides voice communication between your telephone system and the DoorPhone Speaker- Controls remote door unlocking (with optional customer-supplied and customer-installed electromechanical strikeplate)- Has door ajar/detect notification capability when used with a customer-supplied and customer-installed door switch- Interfaces the DoorPhone Speaker and has extra alert contact closure- Volume control for speaker and talkback may be used with C.O. ports, C.O. lines or C.O. station ports, includes port saver features and has ability to dial up to 16 digit telephone number- UL/CSA listed
BRAND : VALCOM
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