To calibrate the gray button unit,
Raise the unit until it is perpendicular to the ground (plumb).
remove the power from the back of the wall plate.
find the posts on the back of the plate that read CAL
use a paperclip (unless the jumper is on your STO post) to jump across the CAL posts as you reapply the power and turn the unit on.
When it starts flashing numbers on the front of the wall plate. Remove the power and the jumper.
It should read 24 in this position.
Jim and Jennie, Cats=Bittles and Potter, 2000 Dynasty 350 ISC
2013 Silverado 4x4 Towed with R1200GS in bed.
PROV23:4 Do not wear yourself out to get rich; have the wisdom to show restraint.