Specification: 1) Dual serial signal S.BUS/PPM encoding function, automatically identify input signal type, no need manually set.2) Tiny size, signal CH1-CH4,it can also connect 2 boards with Y type cableto extend 8 channels signal.3) Suitable for the receiver with single serial signal output or the receiver need to extend output signal.Usage IntroductionOutput CH1-CH4: Directly input serial signal (S.BUS/PPM), converter will automatically identify and output corresponding channel signal CH1-CH4.Operation Voltage: 5.0~8.4VOutput Channel: 4CHTypes: CH1-CH4Colour: blackMaterial: plasticSize: 11x36.5x10.5 mm (Including the PIN)Package Contents: 1 x Signal Conversion Module ReceiverOnly the above package content, other products are not included.Note: Light shooting 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.