HACC-R104MK Vandal-proof Card Reader with keypad PC + zinc-alloy material shell (material protection level is IK10) Equipped with the 32-bit high-speed processor Built-in audible beeper Display the reader status with LED indicator DIP Switch RS 485 and Wiegand (W26/W34) protocol Tamper-proof alarm Online upgrade function (under the 485 communication mode), and card reader can degrade to pre-upgrade status in case of upgrading failed Dust-proof and water-proof design