2 way + codelock surface GSM kit Gray face & frame: 4000 Series GSM intercom kit with 500 code (+32 temporary codes), 2 relay keypad, expandable up to 50 call buttons. Self contained including a dry contact relay output, push to exit button input, USB connection, auxiliary inputs and auxiliary output. Extensive programming options. The kit includes the door panel, 12Vdc 2A PSU and antenna.
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