PSC-1202 Sequence Power Control Unit Turn on/ off power sequential control RS-485 port control up to 15 apparatuses RS-232 or USB port to connect control software and other environmental control system (AMX or Crestron). AC overload protector Turn on/ trigger on contacts Product Spec PSC-A122 Power Control Unit AC auto-on/ off control Turn on/ trigger on contacts RS-485 port (control to 8 apparatuses) AC overload protector User Instruction Contact Us