Jul 11, 2018 - 08:10 AM
I apologize for the extremely delayed response but we still wanted to reply.
This is referring to the water spray pressure.
After activating the skin sensor the LED lamp for water pressure on the BB-2000 remote screen will light at the third or middle level. To adjust water spray pressure, press the plus or minus buttons to your desired comfort level. Once you deactivate the skin sensor water spray pressure will return to the third or middle level.
Bio Bidet Customer Support