This is a dual function kit which can be used as a (1) IR battle unit and also as a (2) TK board configurator through its LED.
When used in IR tank battle situations the IR receptor detects gun fire from the opponent tank. The red LED then flashes up when hit.
When used in conjunction with a SONY TV Remote Controller (CM0011), the LED is used to configure the TK board.
This kit consists of 5P connector with IR receiver & Red LED indicator, and a 2.54mm-pitch Jumper