What is the minimum number of devices required for my subscription? September 04, 2020 02:53 Updated There is no minimum number of devices or spending required for your subscription. Related articles How long is the warranty period for VIO smart devices? Subscription guide: HALCYON LED Strips What happens to the existing items when I amend my subscription? What to do after I have cancelled my subscription? How long does it typically take VIO to process my refund?