2.4G 8CH remote control with receiver board DIY toy boat tank car 4-6v SNRM43

2.4G 8CH remote control with receiver board DIY toy boat tank car 4-6v Model: SNRM43 Remote distance: 50 meters outside Remote control frequency: 2.4G Can control the number of motors: 4 Receiving board: Receiver board size: 5.6 * 3.5cm Input voltage: 4-6v Remote control power supply: two AA batteries Instructions:   1, keep the receiver board and remote control switch in the closed state,   2, open the receiver board switch, open the remote control switch, and then close the remote control board, remote control red light flashes off, said the frequency of success, if the flashing immortal, please wait for a while, or all shut down Try again.