FM1D20E-AV24 Hour or 7 Day 120 277 V Electronic Flush Mount Module, 15 A, 20 Setpoint Programs, SPDT The FM1D20 Series is a great value electronic time based control solution for ventilating, heating, cooling, lighting or other electrical loads in commercial and industrial applications. These one channel time switches are programmable for 24 hour or 7 day schedules with integrated cycle timer. The FM1D20 Series is intended for either panel, surface, flush or