SR21, Sensors and Safety



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, 0,51 Mb)
09/08/2016 - DS-SR21_SERIES-IT
(.pdf, 0,51 Mb)
SR21 Instruction Manuals
01/12/2017 - SR21_slotsensors_manual_DEU
Rev D (.pdf, 0,08 Mb)
01/12/2017 - SR21_slotsensors_manual_ENG
Rev D (.pdf, 0,08 Mb)
01/12/2017 - SR21_slotsensors_manual_FRA
Rev D (.pdf, 0,08 Mb)
01/12/2017 - SR21_slotsensors_manual_ITA
Rev D (.pdf, 0,08 Mb)
Brochure New Products
05/12/2017 - Brochure-New_Products-ENA4
(.pdf, 1,87 Mb)
Sensors Product Guide
23/06/2016 - PG-Sensors-ENA4
(.pdf, 2,72 Mb)
03/03/2016 - PG-Sensors-DE
(.pdf, 2,74 Mb)
23/06/2016 - PG-Sensors-IT
(.pdf, 2,77 Mb)
23/06/2016 - PG-Sensors-ZH
(.pdf, 2,38 Mb)
Photoelectric Sensors Catalog
23/03/2016 - CATALOG-PhotoelectricSensors-ENA4
(.pdf, 34,62 Mb)
20/06/2016 - CATALOG-PhotoelectricSensors-IT
(.pdf, 35,19 Mb)
SR21 Drawings
05/04/2013 - SR21_slotsensors_PDF
(.pdf, 0,04 Mb)
05/04/2013 - SR21_slotsensors_DWG
(.zip, 0,05 Mb)
05/04/2013 - SR21_slotsensors_IGES
(.igs, 0,98 Mb)
CE378_0 - SR21
01/01/2017 - CE378_0 - SR21
(.pdf, 0,03 Mb)
UL - SR21_SR23
16/03/2017 - UL - SR21_SR23
EAC - Sensor-LightCurtains_NegativeLetter
26/06/2015 - EAC - Sensor-LightCurtains_NegativeLetter
(.pdf, 0,33 Mb)

Customer Service

Datalogic Customer Care

Our mission is to provide our Customers with excellent service, at every interaction, tailored to their profiles and their industry.

Customer Services will ensure a lean and consistent response path to each request. Our empowered and talented specialists will engage with the customer and commit to drive each case to complete resolution. 

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