The PXE does NOT have an internal beeper so the 'Internal Beeper' section on the PDU page always shows "Off."
See Also
Device Management
Displaying PDU Information
Naming the PDU
Modifying the Network Configuration
Modifying Network Service Settings
Setting the Date and Time
Setting Default Measurement Units
Specifying the Device Altitude
Setting Data Logging
Configuring SMTP Settings
Setting the EnergyWise Configuration
Rebooting the PXE Device
Resetting All Active Energy Readings