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Panasonic KX-TDA3161 4-Port Doorphone Card for TDA50:
$59.00
4-Port Doorphone Card (DPH4) This card supports up to 4 Panasonic doorphones (KX-T30865), 4 Door openers relays, and 4 sensors.Check out my other sales for doorphone, expansion cards, headsets and more...
