-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.-NOTE: X0+X1=Red, X0+X2=Green. X1 X2 can not connect in series.Technical Indexes:Model: AD16-22SRated Voltage: AC/DC 12VRated Current: ≤20mAAmbient Temperature: -25 ~+55 Continuous Work-Life: ≥20,000HDimension:Head Diameter: 28mm (1.1")Head Length: 13mm (0.51")Depth Behind Panel: 51mm (2")Overall Length: 64mm (2.52")Mounting Hole Dia.: 22mm (7/8")Fits Panel Thickness: ≤6mm (0.24")Energy Saving & Low Maintenance CostPlenty bright LED chips offer uniform illumination without dark areas. They will surely give you a visual status cue of any indexing signal, anticipating signals or emergency signals.Popular 22mm SizeThese LED Pilot Lights feature a popular dimension. Simply drill a 22mm (7/8") hole, and use the included screw ring to secure this Indicator Light to any 12-volt power source.Screw TerminationAssembling with spade terminal connectors (or fork connectors) will provide a tight connection. You may need a screwdriver to help to open the dust-prof cap.Applications Include:The ship, machine tools, electrical equipment, switch cabinet, and power distribution cabinet.Electrical control panels such as HVAC Panel and electrical Panel.DIY Projects such as PLC Training Project.