Remote Controller Transmitter and Receiver Kit for DIY Double Motors RC Boat 4Ch Specifications: - Transmitter board: 6 cell 1.5V dry battery - Receiver Board: 3.6-9V (using toy charging, battery 4.8V, 7.2V battery pack, can not use model lithium battery) - Distance: 150m - Frequency: high frequency 2.4g, to match the frequency, multiple sets at the same time, no serial number, stable signal - Power: high power, integrated motor drive chip on the receiving board, MOS tube drive efficiency, power saving, not triode drive! ! Features: - 150m long distance, open the switch automatically to the code, no crossover. - Handle control, four channels, speed adjustable. - The direction can be fine-tuned to make the model go straight. - Receive board with switch, the input end has reverse connection protection, not afraid of positive and negative end connection. - The output has a self-recovery fuse. - Suit for toys that are driven by the motor on the left and right sides and differential gears for differential turning (without steering gear or steering motor!) - Using: for diy rc differential engineering vehicles, excavators, tanks and bait boats. suitable for the differential turning of the motor on the left and right sides: such as the left and right side of the track, such as the tank excavator, the crawler robot, and the remote control boat with two propellers left and right, the high-power long-distance toy? Note: Max 2A/ch, less than 380 motor are useful(such as 130/180 motor). 380 motor with large current for this kit, may cause it damaged. Shipping 1.If you need to buy in bulk, please contact, we will reply in 24 hours. 2.We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. 3.Usually product Reaches after about 12-45 business days depending on destination. If you have not received your shipment within 45 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Refund or resend product will be offered if item still not received. 4.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We ask you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them! THANK YOU :)