The Aro 5631 43 02 Pneumatic Air Spool Limit Switch is a 3‑way pneumatic limit switch with a 1/4" NPT threaded port and a roller‑arm actuator. It is used to sense actuator position in pneumatic systems and translate movement into electrical switching through its limit contacts. This model provides a compact roller‑arm interface for straightforward installation in automated machinery and uses standard 1/4" NPT connections for piping compatibility.
