Function: 1. The LED indicator light features uniform luminescence and a lifespan of over 10,000 hours. 2. Utilizing high-precision CNC machining technology, the integrated metal shell offers high structural strength, is drop-proof, anti-collision, and more environmentally friendly. 3. The product comes with a built-in waterproof sealing washer for water and dust resistance. 4. The flame-retardant base has high temperature resistance, flame retardancy in emergencies, and a fire-resistant wire with improved conductivity. 5. Common anode (black wire positive) means two color indicators share one positive terminal, making it very convenient. Specification: Item Type: LED Indicator Light Material: Chrome-plated Brass Applications: Car modification, equipment, computer modification, access control switches, CNC machine tools, industrial control instruments Installation Size: M8x0.75mm Function: Common Anode (Common Positive) Light Source Type: LED Working Temperature: -40~70/-40~158 Working Humidity: 10%-90% Display Type: Flat head Protection Level: IP67, IK10 Features: Common Anode (black wire positive) Means: Two color indicators share one positive terminal. After selecting the common anode, the black line is the positive electrode for the common anode, the red line is the red light (negative), and the green line is the green light (negative). Red and yellow, red and blue are the same. Package List: 4 x LED Indicator Light 4 x Compression Nut 4 x Washer