depends on camera

Cudde Excite is about 12" off ground (don't know why it needs to be so low)
Wildviews - generally higher than normal - 3.5-4 feet even had at 4 feet
Cudde 3.0 - about 30" or so
Stealth - "normal" height, 3 feet or so

I found the best use of my Stealth viewer is when setting up the cam. I can get cam set, take a sample pic of me, then view it and adjust the cam as needed. No guess work.