Serviceline Industrial Sensors
Serviceline Explosion Protection

Retroreflective sensor RLK39-54/31/40a/116

  • Glare protected with polarization filter
  • Visible red light
  • Light-on/dark-on, switchable
  • Degree of protection IP67

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  RLK39-54/31/40a/116

Product Description
Retroreflective sensor for standard applications, polarization filter, detection range 7 m, red light, sensitivity adjuster, light/dark on, relay contact output, terminal compartment
General specifications
Effective detection range0 ... 5 m
Reflector distance0.1 ... 5 m
Threshold detection range6 m
Reference targetH50 reflector
Light sourceLED red
Light typemodulated visible red light
Polarization filteryes
Ambient light limitIEC / EN 60947-5-2 , 10000 Lux
Functional safety related parameters
MTTFd803 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Indicators/operating means
Function indicatorLED yellow: switching state
LED red: pre-fault indication
Control elementsSensing range adjuster, light-on/dark-on changeover switch
Electrical specifications
Operating voltage12 ... 240 V DC
24 ... 240 V AC (50 ... 60 Hz)
Ripple10 %
No-load supply current≤ 50 mA
Protection classII, rated voltage ≤ 250 V AC with pollution degree 1-2 according to IEC 60664-1 Caution!
The protection class 2 is only valid when the terminal compartment is closed. output circuit has basic insulation to control circuit according to IEC/EN 61140
Power consumption≤ 3 VA
Time delay before availability≤ 300 ms
Switching typelight/dark on
Signal output1 relay output
Switching voltagemax. 240 V AC ; 150 V DC
Switching currentmax. 3 A
Switching powerDC: max. 90 W AC: max. 750 VA
Switching frequency≤ 25 Hz
Response time≤ 20 ms
Product standardEN 60947-5-2
Approvals and certificates
EAC conformityTR CU 020/2011
TR CU 004/2011
CCC approvalCertified by China Compulsory Certification (CCC)
Ambient conditions
Ambient temperature-25 ... 55 °C (-13 ... 131 °F)
Storage temperature-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Housing width25 mm
Housing height64 mm
Housing depth75 mm
Degree of protectionIP67
Connectionterminal compartment PG9, ≤ 2.5 mm2
Optical facePMMA
Massapprox. 110 g
General information
Scope of deliveryMounting aid , Reflector


ECLASS 11.027270902
ECLASS 10.0.127270902
ECLASS 9.027270902
ECLASS 8.027270902
ECLASS 5.127270902
ETIM 8.0EC002717
ETIM 7.0EC002717
ETIM 6.0EC002717
ETIM 5.0EC002717
UNSPSC 12.139121528

Documents: RLK39-54/31/40a/116

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF514 KB

CAD+CAE: RLK39-54/31/40a/116

CADFile TypeFile Size
3-D model / 3-D-ModellSTP182 KB
CAD Portal / CAD PortalLINK---

Associated Products: RLK39-54/31/40a/116

Mounting bracket for RL39 series Sensorsfa