2 terminal small receiving main control (2 motor output)2 terminal small receiving main control (2 motor output). Power function IR RC system runs on 4 different channels, allowing you to control 4 different models at the same time. The infrared receiver has 2 outputs, can connect up to 2 different power functions. The reach of the infrared remote control system is at least 10m. colour: gray Material: plastic + metal Package Contents: 4 x remote control receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.