How do I purchase an Extend ADH Protection Plan? Follow A protection plan can be purchased online through our website. Note that an ADH plan can only be purchased at the time the product is purchased, not after. Related articles How many times can I use the Extend ADH Protection Plan? What is an Extend Accidental Damage from Handling (ADH) Protection Plan? Why are you transitioning Arccos Caddie Smart Sensors to a subscription product? What is the Arccos Caddie Rangefinder? What products are covered by the Extend Protection Plan?