The 81921902 is a miniature pneumatic position detector designed for precise position sensing in automated machinery and control systems. It features a lever with roller bearing actuator and operates across a pressure range of 0.1 to 8 bar with an orifice diameter of 2.7 mm, delivering a flow rate of 200 NI/min at 6 bars. The detector has an actuation force of 18 N at 6 bars and supports both normally closed (NC) and normally open (NO) circuit functions with connectable exhaust capability. Operating reliably between -5°C and +50°C with a mechanical life exceeding 107 operations, this all-metal detector is ideal for position monitoring in pneumatic automation, machinery control, and industrial process applications where durability and precision are essential.