Description:100% brand new and high qualityMaterial: Electronic ComponentsColor: See picturesFrequency: 27MHZEmission Plate Voltage: 3-4.5V;Receive board working voltage: 4.5v-6v;Received board OUTPUT: 4 lines,2v-3.5vReceiving range about 10meterConnection method:Emission Plate: red V+ positive power supply, black wire V- negative power supply, ANT connect the antenna; 3-4.5VReceiver Board: black wire = negative power supply, red wire =positive power supply;L R wire for moter 1 can supply continue powerful supplyF B wire for moter 2 can supply continue power supplyDimensions: (L*W)Emission plate: 5.7*3.7cm/2.24"*1.46"Receiver board: 4.2*2.7cm/1.65"*1.06"No Retail PackagesQuantity: 1PcNote: Due to the difference between different monitors, the picture may not reflect  the actual color of the item. Thank you!Package includes:1 Pc x 4CH Remote Control 27MHZ Circuit Board PCB Transmitter Receives Antenna Toys