Grassline Optimum Digital Socket Box Timer OP-SBSDIGIOptimum Digital Socket Box Timer OP SBSDIGI The Grasslin Optimum Digital Socket Box Timer timeswitch for mounting directly over a flush or surface mounted 13 amp socket box. Features General purpose timeswitch Designed to mount directly over a single pattress 24 Hour 7 Day programming 16 Amp resistive, 2. 5 Amp inductive Minimum setting 1 minute Timed On Off or Advance selections 24 memory spaces Day group programming Running reserve 3 years from