This datasheet contains discussion about specifications, switching threshold, range, ambient light, and measuring range. There are lots of information regarding distance, ambient conditions, sensor, and ambient are explained inside this datasheet.
Inside this datasheet you can find explanation regarding threshold, distance, error, and circuit. Here are chosen from this datasheet:
Laser Class II Model number VDM28-8-L-IO/73c/136 Distance sensor Electrical connection Option: with 4-pin, M12 x 1 connector 1 +UB • Operates reliably with Pulse Ranging Technology (PRT) 2 Q2 • Red laser as the light emitter 3 0V 4 C/Q1 Features • Smallest device with PRT for applications as measuring sensor • High reproducibility irrespective of the surface • Minimal black-white difference • 2 Switching points per output • IO-link interface for service and process data = Light on = Dark on Pinout 1 The VDM28 distance measurement device employs Pulse Ranging Technology (PRT). It has a repeat accuracy of 5 mm with an operating range of 0.2 … 8 m and an absolute accuracy of 25 mm. The sensor is highly resistant to ambient conditions.
In addition, this datasheet contains more about interface, accuracy, distance sensor, and mounting.