Features Waterproof metal two‑color LED light emits uniformly, with a life span of more than 10,000 hours. High‑accuracy CNC machine tool cutting technology, one‑piece metal shell, more environmentally friendly. The flame‑retardant base is resistant to high temperatures, and can be flame‑retardant in emergency situations, and the conductivity of the fire‑resistant wire is enhanced. The product has built‑in waterproof sealing ring, waterproof and dustproof. Common cathod electrode means 2 color indicator lights share a negative electrode. Specification: Item Type: Pre-Wired Round LEDsMaterial: Brass chrome plated Uses: Car modification, computer modification, access control switches, CNC machine tools, industrial control instruments Installation Size: M10 x 0.75 Voltage: 3-6V Function: Common cathod electrode Light Source Type: LED Working Temperature: -40℃~70℃/-40℉~158℉ Working Humidity: 10%-90% Shade Type: Flat head Protection Level: IP67, IK10Size: Approx. 10mm / 0.4inFeatures:  Common Cathod Electrode Means: 2 color indicator lights share a negative electrode After 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. Package List:4 x LED Indicator4 x Compression Nut4 x Washer Package List 4 x LED Indicator 4 x Compression Nut 4 x Washer