Bosch Rexroth Aventics R412019488 Reed Sensor

R412019488 is a ST4-series reed-contact sensor from Bosch Rexroth/Aventics designed for rugged pneumatic environments. The reed switch provides a NO (make) output when a magnet is present, and the unit ships with a 3 m cable and three-conductor wiring ends (open cable ends) for direct connection to control electronics. Built with a reinforced polyamide (glass-fiber) housing and a polyurethane cable sheath, it carries IP65 and IP67 protection and operates from -30 to 80°C. The device accepts DC operating voltages from 5 to 30 V and can switch up to 0.13 A DC (about 3 W / 3 VA) with a yellow LED status indicator showing the switch state. The ST4 R412019488 is compatible with Aventics mounting in multiple series, including PRA, SSI, GSU, RTC, CKP, GPC, MSC, MSN, RCM, and CVI, and uses a 4 mm slot width for fit in appropriate T-slot interfaces. Certified to UL/cULus and RoHS standards, this sensor is intended for reliable position sensing in pneumatic systems and valve assemblies where magnet actuators are employed.