Description:Long-life and reliable LED Indicator with Flashing Light and Buzzer.LED for energy saving and low maintenance cost. High brightness and loud buzzer for easy recognition.Screw-clamp for easy connection and strong conductivity. IP40 retarding shell.From electricity equipment to textile machines, printers, ships, mining machines and everything in-between, these panel mount lights are sure to give you a visual status cue of any indication signal, warning signal.Simply drill an 22mm (7/8 Inch) hole, and use the included screw ring to secure this Buzzer Light to any 12 volt power source.