The Siemens 3RG7401-0HH00 is a SIMATIC PXO320 K20 retro-reflective photoelectric sensor with an integrated polarisation filter. It's built for detecting objects over a 0.1 to 2.5 m range, running on a 10-30 VDC supply. The NPN output is configurable for light-on or dark-on operation, and it switches up to 100 mA. The 2-meter PUR cable with 4×0.14 mm² conductors handles the wiring, and the IP67 rating means it'll shrug off coolant splash and dust out on the plant floor.
Siemens 3RG7401-0HH00 Retro-Reflective Sensor, EOL, NPN, 0.1
MPN3RG7401-0HH00
End of Life
Siemens SIMATIC PXO320 K20 retro-reflective sensor, 31x20x12 mm, DC 10-30V, 0.1-2.5m range, NPN output, light/dark-on programmable, 100 mA, 2 m PUR cable, IP67, lifecycle end-of-life.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Frequently asked questions
What are the key ratings of this sensor?
Retro-reflective with polarisation filter, sensing range 0.1 to 2.5 m, supply 10-30 VDC, NPN output, light/dark-on programmable, 100 mA switching capacity, 2 m PUR cable, IP67 enclosure.
MPN
3RG7401-0HH00