Function:1. The lamp emits a uniform light, with a lifespan of more than 10,000 hours, which is very practical. 2. The uniform metal shell uses high-precision CNC machining technology, has high structural strength, and is resistant to falling and collisions. 3. High-temperature resistant flame-retardant base, flame retardant in emergencies, fireproof wire improves conductivity. 4. The product has a built-in waterproof sealing ring, waterproof and dustproof. 5. Common cathode electrode means that 2-color indicator lights share a common cathode electrode. Specification:Item Type: Pre-wired Round LEDsMaterial: Chrome-plated BrassApplications: Car modification, computer modification, access control switches, CNC machine tools, industrial control instrumentsInstallation Size: M8 x 0.75Function: Common cathode electrodeLight Source Type: LEDWorking Temperature: -40~70/-40~158Working Humidity: 10%-90%Display Type: Flat headProtection Level: IP67, IK10Size: Approx. 8mm / 0.3inFeatures: Common Cathode Electrode Means: 2-color indicator lights share a common cathode electrodeAfter selecting the common cathode electrode, the black line is the common cathode 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