AIRSTEP Lite is the simplified version of AIRSTEP, it has removed all hardware control interfaces and only kept the Bluetooth to send MIDI and HID messages. This means that Lite can only connect to mobile phones, tablets, and computers to control software, but cannot control hardware devices. In addition to this, the other functions of Lite are the same as AIRSTEP. However, Lite can not only be used independently but can also be used as AIRSTEP's wireless extension footswitches. Lite can wirelessly control all wired devices connected to AIRSTEP. So you can own both AIRSTEP and AIRSTEP Lite without worrying about the duplication of functions.