1.Long-life and reliable LED Indicator with Flashing Light and Buzzer.2.LED for energy saving and low maintenance cost. Hight brightness and loud buzzer for easy recognition.3.Screw-clamp for easy connection and strong conductivity. IP40 inflaming retarding shell.4.From electricity equipments to textile machines, printers, ships, mining machines and everything in-between, these panel mount pilot lights are sure to give you a visual status cue of any indication signal, warning signal or accident signal.