When does PIE turn off automatically? Bagel Labs August 07, 2018 09:23 Updated Follow After two minutes of inactivity, PIE will automatically power off. Related articles Is PIE waterproof? What is the fastening gear? When do I use it? PIE's display won't turn on How long does the battery last? Can I measure anything other than waist circumference? Comments 0 comments Please sign in to leave a comment.