The controller has four inputs (I1-14) for connecting sensors (buttons, phototransistors), 2 outputs (M1-M2) for connecting actuators (motors, lamps), an LED as an operating indicator, a DC bushing to connect a power supply (9 V DC), 2 connection bushings for a 9V battery holder or a rechargeable battery pack, a mini USB connection for transmitting data from the PC to the controller and a Bluetooth 4.0 wireless interface for wirelessly transmitting data between the controller, a PC or a tablet. The frequency range is 2,402 GHz - 2,480 GHz, with a maximum transmission power of 1.37 mW.
