100% brand and high quality Material: Electronic Components Color: See pictures Frequency: 27MHZ Emission Plate Voltage: 3-4.5V; Receive board working voltage: 4.5v-6v; Received board OUTPUT: 4 lines,2v-3.5v Receiving range about 10meter Connection method: Emission Plate: red V+ positive power supply, black wire V- negative power supply, ANT connect the antenna; 3-4.5V Receiver Board: black wire = negative power supply, red wire =positive power supply; L R wire for moter 1 can supply continue powerful supply F B wire for moter 2 can supply continue power supply Dimensions: (L*W) Emission plate: 5.7*3.7cm/2.24"*1.46" Receiver board: 4.2*2.7cm/1.65"*1.06" No Retail Packages Quantity: 1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!