OV-1001-HUP Dynamic switching amplifier for detection of fast events on a variable background signal
Application examples:

Defects on fast-running threads or wires
Counting of falling objects in light band sensors
Flow control of granules in transparent tubes

Operating voltage: 10-30 V DC
Switching output: PNP
Switching frequency: 2000 Hz
Terminal (supply): M8, 4-pin