-AD16 Series LED Indicators are applied high-bright LED chips as the light source with long service life, low energy consumption, and lightweight.-These indicator lights are mainly used on the circuit or mechanical equipment to monitor and alarm the operation status of the equipment, indicate whether power is on or show the operating condition of an equipment device.Technical Indexes:Model: AD16-22SMRated Voltage: AC/DC 12VRated Current: ≤20mALight Type: Flashing LEDSound Type: IntermittentBrightness: ≤100cd/m2Withstand Voltage: 2.5kV for 1 MinuteInsulation Resistance: ≤2 MilliohmContinuous Work-Life: ≥30,000HDimension:Head Diameter: 28mm (1.1")Head Length: 13mm (0.51")Depth Behind Panel: 53mm (2.09")Overall Length: 66mm (2.60")Mounting Hole Dia.: 22mm (7/8")Fits Panel Thickness: ≤6mm (0.