Bently Nevada 330881-28-6-155-03-02 appears to be a highly specific configuration of a machinery monitoring module. It is likely a 4-channel vibration monitor from the 3500/42M series.
The Bently Nevada 330881-28-07-155-03-02 is a precision 3300 XL proximity probe, delivering reliable non-contact measurement of shaft position and vibration for critical rotating machinery monitoring.
