This Semi-Recessed Wall Mount Cabinet protrudes slightly from the wall leaving a finished look and is specifically designed to hold the Philips HeartStart line of AEDs. A perfect fit, this sturdy metal construction wall cabinet protects and prominently displays your Philips AED. Fixed shelf displays AED at window level, with room underneath. Door-activated alarm and flashing strobe light alert everyone the AED has been deployed for rescue. Alarm can be wired to an external panel. Alarm requires two 9-volt batteries (not included). Philips Premium AED Cabinet - Semi-Recessed Mount