["Description:\r\nbrand new and high quality\r\nFeatures:\r\nRemote distance: 50 meters outside\r\nRemote control frequency: 2.4G\r\nCan control the number of motors: 4\r\n \r\nReceiving board:\r\nReceiver board size: app. 5.6 x 3.5cm/2.2 x 1.38''\r\nInput voltage: 4-6v\r\nRemote control power supply: two AA batteries(not included)\r\n \r\nInstructions:\r\nKeep the receiver board and remote control switch in the closed state.\r\nOpen 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.\r\n\r\nSpecification:\r\nMaterial: Plastic\r\nColor: Black,Orange\r\nQuantity: 1 set\r\nNote:\r\nTransition: 1cm=10mm=0.39inch\r\nNo retail package.\r\nPlease allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes:\r\n1 x 2.4G 8CH Remote Control \r\n1 x Receiver Board\r\n4 x Screws(other accessories demo in the picture is not included.)"]