This LED indicator light is uniform and has a lifespan of more than 10,000 hours. Precise CNC machining technology, the one-piece metal shell has high structural strength and is more environmentally friendly and resistant to falls and collisions. These LED signal lights have a built-in waterproof sealing loop, making them waterproof and dustproof. Flame-retardant base, high temperature resistance, flame retardant in emergencies, fire-retardant wire, improved conductivity. Common Anode (anode black line) means: 2 color indicators share a positive. ----------------------- Item Type: Indicator LED Lamp Material: Chrome-plated Brass Applications: Computer modification, access control switches, CNC machine tools, industrial control instruments Installation Size: M12 x 0.75 Applicable Voltage: 110-220V Function: Common Anode Light Source Type: LED Working Temperature: -40℃~70℃/-40℉~158℉ Working Humidity: 10%-90% Display Type: Flat Head Protection Level: IP67, IK10 ----------------------- 4 x LED Indicators, 4 x Compression Nuts, 4 x Washers