Item Name: Signal Tester for Automobile Car Auto Vehicle Signal Generator Signal Tester. Description:Size:As the picture shownColor: Black9 ranges of frequency selection, accurate frequency output.Material: ABS + electronic componentsAbout Operating Power Supply Input: The operating power supply of that signal generator is 12VDC, user can use the 12V power supply for the Battery of the car, or user any other 12V regulated switching.
