Hole Size: φ22mm Color: red, yellow, blue, green Model: AD16-22D / S Center light intensity: 500 (cd) voltage: 220V Rated Power: 1 (W) Line ship, textile, printing, mining machinery and other equipment as directed in the signal, notice the signal, accident signal and other instructions with the signal. Head style and diverse, high brightness, reliability, attractive appearance and manufacture sophisticated, for electric power, telecommunications, machine tools, boats Package list:1X lights AD series high-brightness pure color LED indicator light-emitting chips as the light source, long life, low power consumption, small size, light weight,