1、The metal LED indicator light is uniform and has a life span of more than 10,000 hours. 2、This LED indicator has high accurate CNC machine cutting technology, and the metal shell has high structural strength, which is more environmentally friendly and resistant to falling and collision. 3、The 8mm LED light has a built‑in waterproof sealing loop, which is waterproof and dustproof. 4、This LED light has flame‑retardant base, high temperature resistance, flame‑retardant in emergency situations, fire‑retardant wire, enhanced conductivity. 5、Common cathod electrode means 2 color indicator lights share a negative electrode. 4 x LED Indicator4 x Compression Nut4 x Washer Item Type: Metal LED Indicator LightMaterial: Brass chrome platedUses: Car modification, computer modification, access control switches, CNC machine tools, industrial control instrumentsInstallation Size: M8 x 0.75mmVoltage: 12-24VFunction: Common cathod electrodeLight Source Type: LEDWorking Temperature: -40℃~70℃/-40℉~158℉Working Humidity: 10%-90%Shade Type: Flat headProtection Level: IP67, IK10Size: Approx. 8mm / 0.3inFeatures: Common Cathod Electrode Means: 2 color indicator lights share a negative electrodeAfter selecting the common cathod electrode, the black line is the common negative electrode, the red line is the red light (positive), the green line is the green light (positive), red and yellow, red and blue are the same.