Feature: 1. With a service life of more than 10,000 hours, uniform light emission and good performance. 2. Accurate CNC machine tool cutting technology, one‑piece metal shell has high structural strength, resistance to fall and collision. 3. The product is waterproof and dustproof, built‑in waterproof sealing ring, very practical. 4. Adopt high‑temperature flame‑retardant base and fire‑retardant wire, which can be flame‑retardant in emergency, and the conductivity is strengthened. 5. Common cathod electrode means 2 color indicator lights share a negative electrode. Specification: Item Type: Pre-Wired Round LEDs Material: Brass chrome plated Uses: Car modification, computer modification, access control switches, CNC machine tools, industrial control instruments Installation Size: M10 x 0.75 Voltage: 110-220V 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, IK10 Size: Approx. 10mm / 0.4in Features: 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