Audac says its APM series of digital paging microphones are equipped with a condenser microphone with cardiologic characteristics, mounted on a 30cm long gooseneck.
The built-in compressor / limiter constantly maintains the output level of the microphone signal. The status of the reproduced signal is indicated on the front panel, to reassure the speaker that the message is clear and audible in all situations.
Each console has three standard buttons (except the APM01 which has only PTT) with pre-assigned functions: PTT (Push To Talk), Select all and Clear. All other buttons can be freely programmed, using the APM configuration software.