Multipurpose indicator lights for a wide range of equipment. Suitable for electricity equipment, textile machines, printers, ships, and mining machines; good for electricians, miners, weavers, and similar roles. What you get. Package includes 10 indicator lights. Key specifications: mounting hole size 22 mm (7/8 inch); overall size 51 x 28 mm / 2.01 x 1.1 inch (L x Head D); under head length 37 mm / 1.46 inch; rated current not more than 20 mA; rated voltage AC/DC 110 V; model AD1622D/S; continuous working life over 20000 h. Reliable material. Indicator light is made of plastic with low thermal conductivity, lightweight, and not prone to overheating. Special designed. Specifically designed to provide a visual status cue for any index signal, expected signal, emergency signal, and other index signals. Use scenarios. On control panels of electrical equipment to indicate power or fault status. On textile machines or printers to display operation status or alerts. On ships or mining machines to indicate critical or emergency signals.