Door Control Panel Spare PCB Assembly. MICROgarde® II supports 2 doors ­ 4 readers. May be used with TDSi® or other third party readers for new or retrofit applications. Easy to install, commission and operate - 2-wire RS-485 communication, and diagnostic LEDs. System integration enabled through optional I/O and TCP/IP modules. Fully flexible and scalable solution. Custom reporting and automated back up. Range of features including variable lock times, local anti pass back and automatic fire door release. PCBs are supplied as spares only. UID of original PCB is required upon order.