2.4G Wireless 2Player Encoder PCB Board General use and compatibility Designed for PC/computer games, multiplayer games, Android smart devices, set boxes, game consoles, and related applications. Includes two identical PCBs; compatible for twoplayer setups. Status indicators and wake behavior When the motherboard is powered on but not connected to the receiver, the red and green indicator lights flash slowly. After flashing for several tens of seconds, it enters sleep mode. Use the MODE/ button to wake the motherboard. Indicator lights and player identification The two PCBs are the same model. The board that powers on first will have the P1 indicator light on green. The second PCB will have the P2 indicator light on red. Battery life and alerts When the battery is low, the indicator lights will alert you that replacement is needed. The battery should be replaced to restore normal operation. Power requirements and safety The motherboard usually uses two 5V/7V batteries with 3V power. It is not recommended to use a 3.7V lithium battery. Longterm use with a 3.7V battery may burn out the main control chip. If you want to use a rechargeable motherboard, you need to a rechargeable one.