Spec Sheet Preview: The AA925 industrial master station is designed for indoor or outdoor use and is weather resistant. The AA925 provides for either handset or loudspeaking use, when receiving a call. For handset use, add the optional (model GD509) handset. The AA925 keyboard consists of 10 numeric dialing buttons (DTMF), push-to-talk button (T), cancel button (X), volume UP/DOWN buttons, privacy button (P) and a microphone mute button (M). A status LED is used for indicating station-ON and Privacy. Speaker and Microphone are on faceplate. The A …