Fixed Frequency: 315Mhz, 433mhz Wireless Remote Receive Controller System & Interference Unit, can be used on any environment, for example: Automobile Remote.... Automotive jammers main function is to interfere with, shielding remote control signal When using the remote control variety without limitation, regardless of the fixed code and rolling code car can interfere with screen disadvantages Wireless Controller: Operating Voltage: 9V Operating Frequency: 315,433 MHz Frequency Deviation: +/- 0.2MHz Operating Temperature: -40 °C ~ +80 °C Receiver Sensitivity: greater or equal to -105dBm Modulation: AM, FM Signal Output Mode: L-signal interlocking M-signal temporary storage Colour: Grey white Material: ABS Size: 135x42x23mm Package Contents: 1 * 315mhz/433mhz Remote Receive Controller (9V Battery not included) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the