The ATP1000 lets you control all programming and operation of compatible security systems. The large 2-line, 16 character display provides easy to ready massages to indicate the current status of the system. The touch pad includes police, fire and auxiliary panic buttons that can be activated at anytime. A built-in speaker provides alarm, status, and button-press sounds. A swing down door revels label with basic system operation commands. The door can be removed by simply opening it past its stop point. The door can also be reattached later if desired. GE Interlogix.