500 Meters 2.4G Remote Controller + Receiver Board Repair Kit for DIY RC Bait Boats

Note:- The remote controller and the motherboard are not compatible with other controller kits. - The wireless transmitting signal is strong. When using the kit, please keep the distance between the remote controller and the receiving board more than 20cm, otherwise, the remote control and the receiving board cannot be connected.- If there is no antenna in your option, please verify that your existing antenna is 2.4Ghz and it is an IPX interface.- Please use motors, batteries, and servos of good quality, or they will affect the function- A 7.4V rechargeable battery is recommended. Motors can be 390, 380, 550,775, etc., but high-speed motors with a working current greater than 10A are not recommended.Factors that easily cause the motherboard to burn:- Using a high-voltage and high-rate battery (such as 12V) and driving a high-speed and high-power motor (load current is greater than 8A), may cause the motherboard to burn out due to overpowering or overheating;- When using a high-voltage