5um resolution 5V TTL AB signal magnetic sensor with 3meter cable 
It need matching tape, please pay via this link.
https://www.ebay.com/itm/500mm-Magnetic-Tape-5mm-Pole-Pitch-TR50-tape-matched-5micron-Magnetic-Sensor-/164534439427?nordt=true

Item include:

one pieces magnetic sensor with cable

same as photos

 

 

Magnetic Scale Product Merits:

Non-contact measurement, without backlash problem, simple installment, and installment permits a bigger error.
Magnetic scales mainly are suitable for the facilities: metal processing facilities, stone material machinery, wood working machine.

Magnetic Scale's Merits:
(1)It has strong ability of anti-severe environment, it won't be dirtied or damaged owing to cooling water,
cooling liquid, metal powder or dust, anti-protection ability is very strong.