Sensor

What is PIS sensor and what does a PIS sensor do? PIS Sensor.  Some people call it "Photo Ink Sensor". It is an analog proximity sensor that measures the reflection of infrared from objects.   According to Kevin, Epson's A2140859 sensor...

PE Lever & Cover

  Epson Holder Star Wheel Assembly - with PIS (Photo Ink Sensor)

Epson CR Scale Sensor for WorkForce This sensor reads the position of the printhead carriage from timing belt.

Epson Sensor for Rotary Disc Scale Used in PF (Page Feed) Paper Pickup H18: FFC 5 Pin  0.5 mm Pitch WorkForce WF-3620 3640 N18: FFC 4 Pin 0.5 mm Pitch Expression Premium XP-7100

A mechanical sensor with lever. If the lever is down, Epson will sense the door is closed.  Usually used to detect if a cover is open or closed. Output: 2 pins (male) Pin Distance: 1.5 mm Package include: 1 sensor.  

Page Width Sensorn assembly

Epson Sensor for Rotary Disc Scale Used in PF (Page Feed) Paper Pickup Connection: FFC 5 Pin  0.5 mm Pitch

Paper Tray Sensor to detect if a paper tray is inserted or not.

This is a genuine part taken from a working printer.  Some minor wear and tear is expected. Epson 1607579 Holder Star Wheel Assembly - Removed From A WF-3640 Printer.