1The ring head type warning led light indicator, it can provide stable performance. 2The nut type installation and fixing, easy to install and remove 3Adopt nylon base, the flame retardant effect can reach V0 level, it is safe and reliable 4Made of high quality brass nickel-plated material, the surface is bright and beautiful, and the touch is good. 5Suitable for automobile modification, engineering instrumentation, battery car modification, access control switch, home appliance button, host modification, etc.