The ACC-APM-2420 IP Door Controller with metal housing and 24V 2A Power Supply Unit (PSU) is ideal when, complete, easy-to-use door control is required. The ACC-APM-2420 has the full attributes offered by the ACC-AP IP Door Controller but in addition offers metal housing with space for batteries and knock-outs for the signal cable wiring as well as the power mains cable. The incorporated PSU provides a battery management system comprising low battery voltage detection and deep discharge protection to ensure that the battery is not permanently damaged through excessive discharge. Comprehensive protection is built-in as standard including mains transient filtering, electronic output overload protection and fuses on the load and battery outputs.