1The shell of the product is made of high-quality plastic and has good impact resistance. 2The product uses LED as light source with low power consumption and long service life. 3The product is very compact, light and easy to install. 4This series of indicators are suitable for signal indication, warning signal, accident signal and other indicative signals in the circuit of electric power, machine tools, ships, printing, mining machinery and other equipment. 5Built-in screw wiring, makes terminals safer and more convenient.