Pioneer ND-PS1 Manual page 10

SENSOR INSTALLATION2
19 mm
Fig 1
Fig 2
Fig 1: Install the 19 mm hole saw (supplied) into the electric drill
and drill the holes in the marked 4 positions.
Fig 2: Insert the sensors into the holes one by one and tighten
them.
Caution
Never paint on the sensors. It is quite difficult to receive ultrasonic
waves.
NOTES
• Make sure the arrow direction points upward when inserting the
sensor into the hole.
• Make sure to install the sensors snugly.