Indicator light, 16 mm, round, plastic, blue, smooth, for inscription with insert caps Indicator lights SIRIUS 3SB2 for signaling switching statuses or faults in systems. The industry-standard 3SB2 pushbuttons and indicator lights have a modular design and are proven in practice. Thanks to their compact design, they are particularly suitable for small control panels. They are extremely functional and rugged, and comply with the IEC/EN 60947-5-1 and 60947-5-5 standards. They can be installed with a high packing density and without the need for any special tools. Versions available: Several colors, illuminated/non-illuminated, with/without inscription, latching/momentary contact operation, and various button heights. Note: Please order individual device, holder and contact blocks separately. 3SB2 - Space-saving, proven in practice and industry standard!