The ATR keyboards allows activation/deactivation operations of the system and partial activating of alarm system realized with AWACS? series units and receivers using a 1 to 6 number code combination. Two codes are available, one main and one utility. The main code is used to control the utility code, to access the programming menu, and to partially or fully activate the alarm system. The secondary code is used only to activate or de-activate the system. There is a penalty for incorrect codes, 24h alarm for tampering and for shutdown under duress. The keyboard is equipped with two circuits. The transmitting circuit for the control of the system and the receiving circuit for signalling of system status (the latest circuit is optional and must be requested separately). It is possible to use only the transmitting circuit as a radio remote control. In this case if can be powered with a 9V alkaline battery The bi directional configuration (with receiving circuit) in combination with the ATX module provides control of system status through LED's that repeat the signals in the unit. In this case power is provided by a small transformer or external power supply unit (available on request). The battery acts as an emergency backup.