You could use the fingerspelled version of "off" to turn off an appliance or a computer, but another common and very clear sign is the sign for "power off." This is a good version for such concepts as " …

How to sign OFF and some variations in sign language with video in the ASL dictionary app.

Sign Variations for this Word Variation 1 - ASL Variation 2 - ASL Variation 3 - Fingerspelled

Thanks! http://www.babysignlanguagedictionary... this is the ASL sign for off This online dictionary is the property of Laura Berg and My Smart Hands™.

Watch step-by-step instructions on how to sign “off" in American Sign Langauge (ASL) | Directions for Signing "Turn off" in ASL

Learn how to sign 'Off' in American Sign Language (ASL). Explore the meaning of 'Off', see how it is expressed with hand signs, and improve your ASL vocabulary online.

Begin with the fingers of your dominant hand on your non-dominant hand. Then, move your dominant hand up and away from your non-dominant hand.