2.4G Wireless 2 Players Arcade Encoder PCB Board generally used in PC/computer games, multiplayer games, Android smart , set-top boxes, various arcade game consoles, etc... 2 motherboards are all the same. who powers on first will have the P1 indicator light always on green, and the second PCB motherboard will have the P2 indicator light always on red. When the battery is low, the indicator light will and give an alarm. The battery needs to be replaced. The motherboard usually uses two 5V/7V batteries with 3V power, and it is not recommended to use a 3.7V lithium battery. Long term use may burn out the main control chip. If you want to use a rechargeable motherboard, you need to order a rechargeable one. If the motherboard is powered on but not connected to the receiver, the red and green lights will flash slowly. After flashing for several tens of seconds, it will enter sleep mode. Press the MODE/START button to wake up the motherboard. The indicator light on the receiving remains on when connected. Even if is not played, it will still enter sleep mode after 5-6 minutes. Press the MODE/START button to wake up the motherboard. Colour:Black Material:PC+Plastic Package Contents: 1 x Joystick Encoder Kit(Due to different product batches, the appearance , which does not affect the use) 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.