Tomas – I apologize for the confusion as the E27 does not work in the same way that M1 works. The E27 has two Alarm Outputs, but these currently are not able to be used on same area. Alarm Out 1 and Alarm Out 2 are configured in the app to work under area settings. Additionally, these do not have a voltage output option at the moment. These are speaker only outputs. Due to how we generate the siren output, there is 12v dc present on the output which is why your getting the buzzing sound.
Engineering is looking at the option of adding the ability to configure these outputs to 12v dc outputs in alarm and to allow them to be on the same area.