RS485 ReaKtorTM Is a low-voltage power and 485 bus distribution device which can support up to 72Nm of power output for use with actuators and bus devices via 22 motor ports and 6 bus device ports. For small system of up to 22 shades an in-line 24V at 1A bus power supply or passive PoE injector is the only power input required. For large systems of up to 176 shades we recommend using one of our Tokamak TM hubs or you can still use up to 8 of the bus power supplies.