[AC-MAX] 5223-5224 Do I need a 4420 ACPLUS door controller to connect a wiegand reader to AC-MAX kit?
Not since the 4420 is exclusive to the ACPlus system and is not compatible with AC-MAX. In addition, AC-MAX allows the direct connection of the wiegand readers up to 4 readers per control unit with 2 or 4 doors.
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