The RIDGE and MOHO runs on a standard guitar pedal power supply - 9V DC (center negative), 250mA (or higher).
Do not subject your Kernom pedal to any voltage above 9V. Doing so will damage your pedal and void your warranty.
The RIDGE and MOHO are protected against power supply inversion.
The MIDI connexion on the RIDGE and MOHO are via MIDI DIN to TRS mini jack type A cable. If your switcher/other MIDI pedals use the traditional 5 pin DIN connector, you will need to get an adaptor, which can be easily found online and will be quite reasonably priced.
Use the internal preset accessible via the dedicated footswitch to access two sounds at any one time. Simply hold down the preset footswitch for 2 seconds to save the current position of the knobs for later use. Retrieve what's been saved using Kernom's editing features.