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Leuze
HT55CL1/LG-200-M12
50148210
Diffuse Sensor with Background Suppression, 10-30VDC, 0.015-0.4m Range, Collimated Beam, Red Laser, 650nm, 2 Push-Pull O/P 1: IO-Link COM 2/Light PNP/Dark NPN, O/P 2: Dark PNP/Light NPN, 0.2 PVC Cable, M12 Male 4-Pin SS Conn, 55C Series
$409.00$409.00 -
Leuze
PRK318B/2N-M12
50116857
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6m Range Limit with Reflector TK(S) 100x100, Red LED, 620nm, NPN, Light/Dark Switching, M12 Male 4-Pin A-Coded Connector, 18 x 46mm, ABS Housing, Plastic Face, -40 to +60C, IP67
$105.00$105.00 -
Takex
FD-A320
Fiber Radiation Sensor HMD Low Temperature, 100-240VAC, Relay Output 1c Max 5A 250VAC Resistive Load, 4-20mA, Light ON, LED Indicator, Die-Cast Aluminum, 2m Cable with Connector, -25 to +50°C, IP64, Use with FD300A/FD600A Accessories
$2,181.53$2,181.53 -
Leuze
PRK5B/2X-M8
50145253
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6.5m with Reflector (TK(S) 100x100, Red LED, 645nm, NPN Light Switching (Dark Switching by Reversing Polarity), M8 Male 4-Pin Connector, 11 x 32.4 x 20mm (WHL), ECOLAB, IP67, 5B Series
$94.00$94.00 -
Leuze
PRK5B/4X-200-M8
50145251
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6.5m with Reflector (TK(S) 100x100, Red LED, 645nm, PNP Light Switching (Dark Switching by Reversing Polarity), 0.2m PVC Cable/M8 Connector, 11 x 32.4 x 20mm (WHL), ECOLAB, IP67, 5B Series
$102.00$102.00 -
Leuze
PRK5B/4
50145245
Polarized Retroreflective Sensor, 10-30VDC, 0.02-6.5m with Reflector (TK(S) 100x100, Red LED, 645nm, PNP Light Switching (Dark Switching by Reversing Polarity), 2m PVC Cable/M3 Thread Sleeves, 11 x 32.4 x 20mm (WHL), ECOLAB, IP67, 5B Series
$94.00$94.00 -
Leuze
RK46C.DL3/4P-M12
50143107
Unpolarized Retroreflective Sensor, 10-30VDC, 0-1.5m, Red LED, 620nm, O/P 1: PNP Light Switching and O/P 2: PNP Dark Switching, M12 Male 4-Pin A-Coded Connector, ECOLAB, IP67/69K, 20.5 x 76.3 x 44mm (WHL), Polybag Detection, 46C Series
$300.00$300.00 -
Leuze
HT46C/4P-200-M12
50129752
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-3m Range Limit, Red LED, 630nm, PNP, Light/ Dark Switching, 0.2m PUR Cable, M12 Male 4-Pin A-Coded Connector, ECOLAB, 46C Series
$249.00$249.00 -
Leuze
HT25CL1/2N-M12
50139639
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-0.6m Range Limit, Red Laser, 650nm, NPN, Light/Dark Switching, M12 Male 4-Pin A-Coded PUR Connector, 15 x 42.7 x 30mm (HWL), Plastic Housing/Lens, ECOLAB, IP67/69K, 25C Series
$381.00$381.00 -
Leuze
HT25CL1/4P-M12
50139638
Diffuse Sensor with Background Suppression, 10-30VDC, 0.005-0.6m Range Limit, Red Laser, 650nm, PNP, Light/Dark Switching, M12 Male 4-Pin A-Coded PUR Connector, 15 x 42.7 x 30mm (WHL), Plastic Housing/Lens, ECOLAB, IP67/69K, 25C Series
$381.00$381.00 -
Leuze
ET28.3/2N-200-M12
50122600
Energetic Diffuse Sensor, M18 Thread Size, 10-30VDC, NPN, Light/Dark Switching, LED Display, Teach Button, 0.2m Cable with M12 Male 4-Pin A-Coded Connector, 15 x 46.5 x 31.8mm (WHL), Plastic Housing/Lens, -40 to +60C, IP67, 28 Series
$106.18$106.18 -
Leuze
50139552
PRK25C/6G-100-M8
Polarized Retroreflective Sensor, 10-30VDC, 12m Range Limit with Reflector TK(S) 100x100, 2 Switching O/P 1: Push-Pull Light PNP/Dark NPN + O/P 2: Push-Pull Dark PNP/Light NPN, 0.1m PUR Cable with M8 Male 4-Pin Connector, ECOLAB, 25C Series
$161.28$161.28
Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.
Additional Sensor Categories:
Proximity | Ultrasonic | Pressure | Temperature | Level | Tilt
How Does a Photoelectric Sensor Work?
Generally a photoelectric sensor consists of the following:
- Transmitter - emits the light beam
- Receiver - detects the light beam and converts it to an electrical signal
Photoelectric sensors detect changes in the light beam caused by the presence/absence, movement or properties of an object.
Types of Photoelectric Sensors:
- Through-Beam (Thru-Beam)
- Transmitter and receiver are two separate units that are directly opposite of each other. The sensor detects when an objects breaks the light beam
- Great for long distance detection
- Ideal for conveyors, counting or monitoring door openings
- Retroreflective (Reflective Mode)
- Transmitter and receiver are in one housing; light beam is reflected back by a reflector. Detection is triggered when an object breaks the beam.
- Medium range detection and easier to install than a through beam
- Ideal for package detection and pallet positioning
- Diffuse (Proximity Mode)
- The transmitter and receiver in one housing; the sensor detects light reflected directly off the target object (no reflector needed)
- Best for short range applications
- Ideal for detecting objects on assembly lines, verifying presence or checking fill level
- Specialized Types:
- Background Suppression: Can ignore objects beyond a set distance, focuses close range
- Color or Contrast Sensors: Detects specific colors or contrast differences
- Distance Measuring Sensors: Mesaure the distance to an object
Categories Related to Photoelectric Sensors:
- Stack lights - signal towers visually communicate the data or alerts that the photoelectric sensors are generating
- Smart relays - photoelectric sensors provide input signals which can process the data and control outputs
- Pushbuttons and estops - if your sensor detects a fault, an operator can use a pushbutton to reset the system
- HMIs - HMIs can dispay the data from the photoelectric sensor which allows you to monitor processes