RSA1 Radon System Alarm with PPS Technology

I have a radon abatement system in the basement and occasionally the fan stops working and my radon level starts to go up. I wanted to know exactly when and for how long the fan stops. I can go into the basement and see if the manometer is showing a vacuum or not from across the room. I wanted an audible alarm that I could hear without going to the device to check it. This device seems to have a sensitive vacuum detector, but the "audible" alarm is a soft beep once a minute. It is possible to run a tube from the system to a common area, but that involves drilling through the wall. It does not meet my needs, although it seems to be accurate.