The Audio Sentinel®Plus>>Web is a web-enabled two channel stereo silence monitor combined with a transparent, integrated stereo audio switcher. Audio Sentinel®Plus>>Web is designed to monitor two balanced or unbalanced independent stereo analog audio sources, one primary, the other back-up. When silence is detected on the primary input it can automatically switch to the back-up analog audio. The Audio Sentinel®Plus>>Web may also be configured for independent dual-stereo non-switching applications. The Audio Sentinel®Plus>>Web can be controlled and monitored locally and/or remotely over any IP network, including private networks, IP-based industrial control networks, and the Internet. Users can operate the product using a web browser or web-enabled mobile device. Email notification may be configured to alert up to eight recipients when silence is detected. SMTP username and passwords using Base64 authentication are supported. The user may also enable a sound effect to play on their PC speaker when an alarm is generated. Logging of system status, along with the site ID may be emailed in time spans from once an hour to once a day. One SPDT relay is supplied to indicate which input channel is feeding the output, while two additional DPDT relays can be independently configured to provide additional notification. SNMP traps and SET/GET to allow multiple units to be monitored and controlled with SMNP management software.