Serviceline Industrial Sensors
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Fax: 330-405-4710
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Fax: 330-963-5827

Diffuse mode sensor RLK61-8-4000-Z/31/115

  • Cost-optimized series for standard tasks in a special design
  • Compact design
  • Wide range of mounting options thanks to cubic housing design with M30 thread
  • 360° high visibility LEDs
  • Programmable ON-delay, OFF-delay, and One-shot timers
  • Version for universal voltages
  • Relay output
 Please contact the Serviceline for exact delivery estimation
127.00 USD
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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 or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  RLK61-8-4000-Z/31/115

Product Description
Diffuse mode sensor
General specifications
Detection range0 ... 4000 mm adjustable
Light sourceIRED
Light typemodulated infrared light , 850 nm
Diameter of the light spotapprox. 45 mm at a distance of 4000 mm
Angle of divergence0.7 °
Indicators/operating means
Function indicator2 LEDs yellow lights up when receiving the light beam ; flashes when falling short of the stability control; OFF: object outside the sensing range
Control elementsLight-on/dark-on changeover switch
Control elementsSensing range adjuster
Electrical specifications
Operating voltage24 ... 240 V AC
12 ... 240 V DC
Switching typelight/dark on, switchable
Signal output1 SPDT relay
Compliance with standards and directives
Directive conformity
EMC Directive 2004/108/ECEN 60947-5-2:2007+A1:2012
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
Mechanical specifications
Degree of protectionIP67
Connection2 m fixed cable    
HousingPC (Polycarbonate)
Optical facePMMA


ECLASS 11.027270903
ECLASS 10.0.127270903
ECLASS 9.027270903
ECLASS 8.027270903
ECLASS 5.127270903
ETIM 8.0EC001821
ETIM 7.0EC001821
ETIM 6.0EC001821
ETIM 5.0EC001821
UNSPSC 12.139121528

Documents: RLK61-8-4000-Z/31/115

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF490 KB
Product information
Series 61 High Performance Photoelectric Sensors (USA-English)USAPDF1710 KB

CAD+CAE: RLK61-8-4000-Z/31/115

CADFile TypeFile Size
3-D model / 3-D-ModellSTP3330 KB
CAD Portal / CAD PortalLINK---

Approvals+Certificates: RLK61-8-4000-Z/31/115

CertificatesCertificate No.File TypeFile Size
China CQC CCC SDOC2020970305000260PDF246 KB
US CA UL General PurposeE87056LINK---

Associated Products: RLK61-8-4000-Z/31/115

56.00  USD
Netlist price. Your individual price will be calculated during checkout.

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Mounting bracket with vertical slotsfa
56.00  USD
Netlist price. Your individual price will be calculated during checkout.

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Mounting bracket with circular slotsfa
56.00  USD
Netlist price. Your individual price will be calculated during checkout.

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Ball and Swivel Mounting Bracketfa
37.00  USD

Contact Us

Ball and Swivel Vertical Mounting Platefa

Function: RLK61-8-4000-Z/31/115

The Series 61 sensor family is a comprehensive product line, offering five sensing modes. Each sensor is equipped with four LEDs that are highly visible from all directions, indicating Power-On, target presence and marginal excess gain. The widely recognized, polycarbonate housing provides a IP67 protection degree rating. Color-coded labels are clearly printed on the housing to easily identify the sensing mode. DC models offer a 4-in-1 output while AC/DC models have a SPDT relay output rated to 3 A. All versions come standard with an integral multifunction timer, sensitivity adjustment and Light-ON/Dark-ON switch. Series 61 sensors are cross-talk protected and have a high degree of resistance to ambient lighting. Each sensor can be mounted via front and rear slots, rear dovetail guide or M30 x 1.5 mounting base. Additionally, cabled sensor models provide ½" - 14 NPT internal threads for use with flexible conduit.