S J Security Systems Pvt. Ltd. Manufactures Access Controller with Single Door Controller. It supports thick, thin card [credit card size and easy color printing] and key fob. It features nonvolatile memory for 2,000 cards and 2,000 events. Multiple networking systems can be configured to control up to 160 doors with supports of PCK 106 multi-channel interface converter. Access Controller with Single Door Controller has auto power reset with watchdog timer and low power RTC design. This S J Security Systems Pvt. Ltd. Offered product has data retention capability for 10 years while power failure.