There is a Line Input channel at 1V or better.Has an Audio Output Channel at 1V or better.
Able to announce Siren or Recorded Signal at least There is a button to select the Siren / Play / Rec operation mode on the front of the machine.
There is a digital display screen and LED indicating the operating status in the channel selection Sun, Mon, Tue, Wed, Thu, Fri, Sat, CH1, CH2, CH3, CH4 at least.
Can choose not less than 10 speaker zones.There is a All (Zone) button to press to select all speaker zones.
Is a speaker sound tester With speakers inside to choose to listen to the speaker zone Can choose to listen to announcements no less than 10 channels.
Is an amplifier Pre-Amplifier There are separate volumes for adjusting the MIC and AUX signals for each channel.
Can choose at least 10 zones.There is a button to select the speaker zone. And the microphone connector on the front of the device For ease of use.
Is a digital timer and emitter. There is a 4.3 "Touch Screen type display screen