These USB RF devices allow you to send events from a handheld controller. The handheld controllers are battery operated and can support 1 to 8 events. Events can be programmed to emulate keycodes, mouse buttons and joystick buttons. Device also supports the Delcom footctrl, DelcomDLL programs and the Delcom generation 2 command set and examples. Tranmitter distance is up to 750 feet. Transmitter frequency is 418MHz legal in the US and Canada. 433MHz is also available for the EU. There 16,777,216 (2^24) unique addresses, allowing multiple devices to be used at the same time. Supported on all major operating systems (32 and 64 bit).