SR21, Sensors



SR21 fork sensor offers high resolution, high speed and very short response time in precise label detection


Slot width 2mm and depth 50 mm for label detection Very fast 20 µs resp. time and 25 kHz switch. freq. Auto-Set for teach-in or dynamic threshold setting

20x90x26 mm 3mm slot width



IR LED emission for label detection on translucid reel Red/Green LED emission for colour mark detection

NPN and PNP outputs with M8 4-poles connector


Compact and robust ZAMA metal case

Teach In


SR21 offer high resolution, high speed and very short response time in precise label positioning, applying and printing, even with very fast machinery and process

Videos and Images

Downloads for SR21

SR21 Series Datasheet
01/08/2016 - DS-SR21_SERIES-ENA4
(.pdf, 535471 byte)
09/08/2016 - DS-SR21_SERIES-IT
(.pdf, 537546 byte)
01/08/2016 - DS-SR21_SERIES-ENUS
(.pdf, 534663 byte)
SR21 Instruction Manuals
14/04/2011 - SR21 slotsensors manual revC deu
(.pdf, 91980 byte)
14/04/2011 - SR21 slotsensors manual revC eng
(.pdf, 92362 byte)
14/04/2011 - SR21 slotsensors manual revC fra
(.pdf, 90560 byte)
14/04/2011 - SR21 slotsensors manual revC ita
(.pdf, 92503 byte)
Photoelectric Sensors Catalog
23/03/2016 - CATALOG-PhotoelectricSensors-ENA4
(.pdf, 36304760 byte)
20/06/2016 - CATALOG-PhotoelectricSensors-IT
(.pdf, 36897114 byte)
22/06/2016 - CATALOG-PhotoelectricSensors-ENUS
(.pdf, 36528766 byte)
Sensors Product Guide
23/06/2016 - PG-Sensors-ENA4
(.pdf, 2848943 byte)
23/06/2016 - Pg-Sensors-ENUS
(.pdf, 2593777 byte)
03/03/2016 - PG-Sensors-DE
(.pdf, 2869618 byte)
23/06/2016 - PG-Sensors-IT
(.pdf, 2901176 byte)
23/06/2016 - PG-Sensors-ZH
(.pdf, 2494620 byte)
SR21 Drawings
05/04/2013 - SR21_slotsensors_PDF
(.pdf, 41156 byte)
05/04/2013 - SR21_slotsensors_DWG
(.zip, 47762 byte)
05/04/2013 - SR21_slotsensors_IGES
(.igs, 1031724 byte)
CE378_0 - SR21
01/01/2017 - CE378_0 - SR21
(.pdf, 33792 byte)
UL - SR21_SR23
16/03/2017 - UL - SR21_SR23
(.pdf, 0 byte)

Customer Service

Datalogic’s Customer Services Organization offers a wide and complete range of post-sales services (EASEOFCARE Agreements).  It is organized in three levels of support, in order to guarantee the most appropriate professional assistance based on the specific problem.

Datalogic’s Customer Service can deploy in the territory a team of multi-lingual professionals, with a broad technical expertise across the whole product range.

Our standard service portfolio includes : warranty extension,  fast turnaround time for  repairs, 24/7 /365 phone support, guaranteed availability of spare parts and next day on site intervention. We can tailor our service offering to your specific needs.  Our experts will support every stage of your projects, from feasibility study to extended post-sales support, performing, when necessary, root cause analysis and remediation.

 Download EaseOfCare Service Programs

 Download Customer Service Organization