Sensor fit and output logic
The OD2-P85W20U0 is a 2D laser displacement sensor from the SICK OD Value series, delivering a measurement range of 85mm ±20mm with a PNP discrete output. It operates on a 12 to 24 VDC supply and is terminated via a connector, making it a straightforward drop-in for existing chassis-mount installations where a PNP-sinking PLC input is expected. Installation distance is specified at 65.0mm to 105.0mm from the target, so the mounting bracket must allow for that standoff; the sensor does not require a fixed offset, but the working range is centered around the 85mm nominal.
Peer comparison: PNP vs NPN output variants
The closest functional peer is the OD2-P85W20I0, which shares the identical form factor, mounting, supply voltage, IP67 rating, and 65-105mm installation distance. The sole difference is the output type: the U0 variant uses PNP (sourcing), while the I0 variant uses NPN (sinking). If your control input expects a sinking signal, the I0 is the direct swap without rewiring the connector.