Users / Card Capacity : 60,000 (Standard), 100,000 (Optional) Transaction Capacity :600,000 Communication : TCP / IP / RS232 / RS485* / Wiegand Input / Output / Security Relay Box Access Control Interface : Lock Relay Output / Alarm Output / Auxiliary Input / Exit Button / Door Sensor / Doorbell Output Hardware : 1.0GHz High Speed CPU / Memory 64MB RAM / 128MB Flash / 125KHz EM Reader /13.56 MHz MF (Optional) / Beep & LED Indicator Standard Function : Access Levels / Groups / Holidays / DST / Bell Schedule Compatibility :Wiegand Slave Reader / ZKBioSecurity Special Function: IP67 Operating Température : -20 °C ~ 65 °C (-4 °F ~ 149 °F) Dimension 131* 80 * 20.6 mm Operating Voltage 12V DC Current Draw < 500 mA