Serviceline Industrial Sensors
Serviceline Explosion Protection

Retroreflective sensor RLK91-6-IR/25/31/115

  • Retroreflective sensor for single-beam closing edge protection
  • Narrow housing suitable for small gaps
  • Sturdy plastic housing
  • Various possibilities for mounting
  • Version with infrared light
  • Version with AC/DC power supply

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH, also apply to Pepperl+Fuchs AG.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  RLK91-6-IR/25/31/115

Product Description
Mid-range photoelectric sensors for detecting people, objects, and vehicles
General specifications
Effective detection range0 ... 6 m
Threshold detection range9 m
Light sourceLED
Light typemodulated infrared light
Diameter of the light spotapprox. 230 mm at a distance of 6000 mm
Functional safety related parameters
MTTFd1083.4 a
Indicators/operating means
Function indicatorLED red, flashes when falling short of the stability control
Electrical specifications
Rated operating voltage96 ... 240 V AC
Switching typelight on
Compliance with standards and directives
Standard conformity
Product standardEN 60947-5-2:2007
IEC 60947-5-2:2007
Approvals and certificates
EAC conformityTR CU 020/2011
TR CU 004/2011
Ambient conditions
Ambient temperature-20 ... 55 °C (-4 ... 131 °F)
Mechanical specifications
Degree of protectionIP65
Connection5 m fixed cable
Optical faceLuran®

CAD+CAE: RLK91-6-IR/25/31/115

CADFile TypeFile Size
3-D model in IGS format / 3-D-Modell im IGS-FormatIGS262 KB
3-D model in STP format / 3-D-Modell im STP-FormatSTP169 KB
CAD Portal / CAD PortalLINK---

Approvals+Certificates: RLK91-6-IR/25/31/115

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of Conformity / EU-KonformitätserklärungDOC-0994APDF183 KB
China CQC CCC2007010305260690PDF1858 KB
US CA UL General PurposeE87056LINK---

Associated Products: RLK91-6-IR/25/31/115

Mounting bracket fa
Reflector, rectangular 51 mm x 61 mm, mounting holes, fixing strapfa
Reflector with mounting holesfa
Reflector, rectangular 84.5 mm x 84.5 mm, mounting holesfa
Reflector, rectangular 60 mm x 18 mm, mounting holesfa
Reflector, rectangular 180 mm x 40 mm, mounting holesfa
Reflector, round ø 84 mm, central mounting holefa
Reflective tape 100 mm x 100 mmfa
Weather hood for series reflectorfa

Function: RLK91-6-IR/25/31/115

Concentration on the essentials is the hallmark of the 91 series. As ac/dc supply devices, these economical, reliable and easy-to-use photoelectric sensors can be used almost universally. Their narrow design means that they can be used in any environment.

The single-beam photoelectric sensors of the 91 series are suitable for closing-edge monitoring for elevators, barriers and doors, as well as for object detection and object tracking in material handling systems.