Grasslin by Intermatic FM1D20A-24 16A, 24V, 50/60HZ Electronic 24-Hour/7-Day Timer Module, Surface/Din Rail Mount 24 VAC/VDC, 1 circuit, SPDT, 16 Amp Surface/Din Rail Mount All programming stored in non-volatile memory with battery back up Manual Override 20 programs - 140 events per week