ul>Installs, programs, tests, commissions, repairs, and maintains field devices related to the campus ID-card access-control system, including IP-based access-control platforms, wireless systems, stand-alone systems, Mercury Security intelligent controllers, downstream interface modules, electronic door locks, card readers, request-to-exit devices, door position switches, control panels, power supplies, relays, and other door hardware related to the campus card-access-control system. Performs advanced troubleshooting of access control systems, including panel communication failures, reader bus issues, OSDP/Wiegand reader connectivity, supervised inputs, relay outputs, power supply faults, battery backup issues, lock power failures, network drops, IP addressing, VLAN coordination, and device-to-server connectivity.