1. The positive and negative inputs cannot be inserted in reverse, as inserting them in reverse will burn the motherboard. Input is a 7-30V battery. 2. When installing, the circuit board should face upwards. If the back is facing upwards, the remote control needs to enter the menu settings. 3. According to the battery voltage of the boat, set the low battery alarm value and full battery voltage value. 12V batteries are generally set to 9.8V and 12.6V, while 24V batteries are generally set to 19.8V and 25.2V, which can be adjusted appropriately according to usage. 4. The overcurrent protection value of the boat is the maximum overcurrent protection for a single motor. Some receiving boards have overcurrent protection, while others do not. 5. Support switching between Chinese and English. NOTE: No GPS version, does not include a GPS module, cannot achieve one-click return, and has no fishing spot setting. 1. Waterproof measures should be taken to prevent water from entering the motherboard. It is best to wrap the remote control with cling film to prevent water from entering, otherwise it may cause the remote control ship to lose control or burn down. 2. After wiring is completed, carefully check before powering on. When powering on, pay attention to fixing the hull and avoiding the propeller to avoid scratches. 3. It is not compatible with other manufacturers' remote controls and motherboards and needs to be used together. 4. The remote control may lose its wireless signal if it is too close to the boat because the signal is too strong and saturated. Therefore, the remote control should be at least 1 meter away from the boat when pairing or using it. Color: Blue Material: PCB Package Contents: 1 * Receiver board 1 * Remote control 1 * Antenna 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 err