Users / Card Capacity 60,000 (Standard), 100,000(Optional),TransactionCapacity600,000,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 EMReader/ 13.56MHz IC (Optional) / HID Prox. (Optional) / Beep & LED Indicator,Standard Function Access Levels / Groups / Holidays,Compatibility Wiegand Slave Reader / ZKBioSecurity Special Function,IP67,Operating Temperature -20 °C ~ 65 °C (-4 °F ~ 149 °F),Dimension 131* 80 * 20.6 mm,Operating Voltage,12V DC Current Draw< 500mA