Card read distance: up to 8 cm. Read all 26 bits EM cards. Interface: 26 bits Wiegand. Maximum cable distance to cont rolle r: 100m. Type of cable: 8 wires shielded cable, 22 AWG. Operating Voltage Range :9 – 16 VDC Reader consumption: Standby: 85mA, Read: 100mA. Built-in audible buzzer acknowledging card reading and bicolor led acknowledging access. Hidden mounting screws deters vandalism. Operating Temp. range : -40°C to 70°C.