Balluff BES-515-449-S21-L is a cylindrical inductive proximity switch that detects metal targets within a 2 mm sensing range. It is a 3-pin device with a normally open output, configured for 35–250 VAC operation via the Balluff S21 AC micro connector, and it draws up to about 150 mA. The rugged M12-style housing measures approximately Ø12 x 70 mm and is designed for easy mounting in automation fixtures, conveyors, and machine assemblies. This variant is listed as discontinued by the manufacturer, which may affect availability and replacement planning.
