The MA911B2 2m cable PH probe is an electrode used for continuous wall (wall) PH meters with a power adapter.
The MA911B2 2m cable PH probe is the electrode of the MC720 - MC122 - MC110 monitors.
The MA911B2 2m PH cable probe, with its universal BNC connector, is also coupled with other Milwaukee monitors or other brands.
After changing the MA911B2 2m PH cable probe, you will need to recalibrate your continuous meter