The kit consists of a metal box with power supply, an IP central unit and an I/O expander. Controlled doors can have input or output readers, both FPAC-MAX (RS-485) and Wiegand footprint. Each controlled door has a 0.2 A current output for readers and a 1.0 A current output for door openers and other door devices. The backup battery charging current (optional) can be set to 0.3A or 0.6A. The entire system is powered from the power supply included in the kit. Includes: BOX-IP16 metal box. PWR4D 13.8Vdc power supply. AC-MAX central unit in TCP/IP network. It manages up to 4 doors each door with an input reader, therefore it allows the connection of up to 4 Wiegand readers or 8 FPAC-MAX fingerprint readers (4 input and 4 output). EXP4D I/O Expander.