Industrial MS4320B-2 Light Curtain Receiver

The STI MS4320B-2 Light Curtain Receiver is a 20‑inch Minisafe‑B safety receiver designed to partner with a matching transmitter to form STI’s light curtain protection system for guarding industrial machinery. It operates from a 115 VAC supply at 50/60 Hz, draws up to 0.25 A, and delivers a response time under 35 ms to ensure rapid interruption of the beam when the protected area is breached. Part of the 20‑inch Series (0.51 m) Minisafe‑B family, this model is identified by MS4320B‑2, with the unit manufactured in the United States and packaged as a standalone receiver sold individually. This receiver is designed to be used with a compatible STI light curtain transmitter to provide guarded access on industrial equipment.