The DBX-88 has a built-in VOX mode, which means that in sensitivity settings 1 to 4, the unit will switch off the sound when nothing is detected on the baby unit.
If the unit is set to sensitivity level 5, you will hear sound continuously.
Should you have any additional questions, you can always contact us via the service section on this website.
Please make sure to clearly state the complaint so that we can provide you with the best possible service.