STI MS4320BX Minisafe Safety Relay

STI MS4320BX Minisafe-B XMTR is a 20-inch light curtain transmitter in STI’s Minisafe-B family, designed to pair with the MS4320BR receiver to form a safety light curtain guarding access to hazardous machinery. The unit is 508 mm long (20 inches) and carries STI part number 42687-0200 for ordering. This transmitter is part of the Minisafe 4300-series and is intended for industrial safety installations where a Minisafe-B curtain protects operators around equipment such as machine tools, conveyors, and robotic work cells, with the corresponding Minisafe-B receiver completing the system. In typical configurations, the transmitter and receiver are mounted opposite one another across an entry or access point; interruption of the curtain signals the control system to stop the protected machinery. The MS4320BX is appropriate for integration into STI's safety-light-curtain setups and is identified in distributor listings as the MS4320BX Minisafe-B XMTR 20 (508 mm), enabling customers to source the exact 20-inch transmitter for their Minisafe-B installations.