Through beam photoelectric sensor

Through beam photoelectric sensors, also known as opposed-mode or emitter-receiver sensors, are a fundamental category in industrial automation for non-contact object detection. These systems consist of a separate emitter unit that projects a continuous light beam (typically infrared, visible red, or laser) directly to a separate receiver unit. ...

Through beam photoelectric sensors, also known as opposed-mode or emitter-receiver sensors, are a fundamental category in industrial automation for non-contact object detection. These systems consist of a separate emitter unit that projects a continuous light beam (typically infrared, visible red, or laser) directly to a separate receiver unit. Detection occurs when an object physically interrupts the light path between the two units. Key technical parameters include sensing distance (ranging from a few meters to over 100 meters for long-range models), light source type (LED or laser diode with specific wavelengths like 650 nm or 880 nm), response time (often in the sub-millisecond range), and output configuration (PNP, NPN, push-pull, or relay). They are available in various housing styles such as cylindrical M12, M18, M30, or rectangular formats, with electrical connections via M8 or M12 connectors or pre-wired cables. Protection ratings typically reach IP65, IP67, or IP69K for harsh environments. These sensors are also referred to as photoelectric barriers, through-beam switches, or opposed-mode sensors in different global markets.

These sensors are deployed in demanding industrial environments where reliable detection over long distances or in dirty conditions is critical. Common applications include conveyor belt monitoring for package presence or jams, automated warehouse entry and exit detection, elevator door safety systems, vehicle detection in car washes or parking garages, and machine guarding in assembly lines. They excel in sectors like automotive manufacturing, logistics and material handling, food and beverage processing, packaging machinery, and heavy equipment operations. Their through-beam design offers the highest immunity to contamination, dust, fog, and misalignment compared to retro-reflective or diffuse sensors, making them ideal for outdoor or dusty factory floor installations.

Within this category, key subcategories include standard cylindrical through-beam sensors (e.g., models with M18 or M30 threads for general-purpose use), miniature sensors for tight spaces (often with M8 or M12 housings), long-range laser through-beam sensors for distances exceeding 50 meters, and high-temperature variants for oven or kiln applications. Typical article codes follow patterns like E3Z-T61, E3JK-TR12-C, or QS30-TX, where the suffix indicates the sensing range, output type, and connection method. For example, in the E3Z series, 'T' denotes through-beam, '61' may indicate a 2-meter cable with NPN output, while '62' might represent PNP output. Other common codes include the OMRON E3JK series, SICK WL series, and Banner QS30 series, each with specific designators for range and electrical characteristics.

Partnering with Electric Automation Network ensures access to a comprehensive inventory of through-beam photoelectric sensors from leading global manufacturers, all with real-time pricing and availability. Our engineering team provides personalized technical support to help select the optimal sensor for your specific application, considering factors like sensing distance, ambient light conditions, and output compatibility. We offer express worldwide shipping to minimize downtime, and each product listing includes detailed technical documentation, wiring diagrams, and dimensional drawings. Whether you need a standard M18 sensor for a conveyor line or a specialized laser through-beam for precision alignment, we deliver the right solution with expert guidance.

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Manufacturer Code Reference Catalog Number Description Delivery Price

100522

E71-NTBS-M8

E71-NTBS-M8

Proximity switch, optical, long range 1.5m, 4L, 10-30VDC, NPN, M8

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100521

E71-NTBS-CA

E71-NTBS-CA

Proximity switch, optical, long range 1.5m, 4L, 10-30VDC, NPN, cable

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WSM6GAOOD24

WSM6GAOOD24

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System: Wireless Entrapment Protection Device, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: Terminals, Output: RELAY SPST, Material: Plastic, Sensing range: 15 m, Housing: 75 x 35 x 125 mm, Material: ABS, Additional: Wireless Main Controller

Wireless entrapment protection device for industrial doors

Wireless control system for industrial gates, 2,4 GHz duplex communication, connection with photo sensors and conductive safety edges, 2 x SPST NO relay output, low battery alarm, monitors up to 6 wireless devices

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WSM6GACCD24

WSM6GACCD24

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System: Wireless Entrapment Protection Device, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: Terminals, Output: RELAY SPST, Material: Plastic, Sensing range: 15 m, Housing: 75 x 35 x 125 mm, Material: ABS, Additional: Wireless Main Controller

Wireless entrapment protection device for industrial doors

Wireless control system for industrial gates, 2,4 GHz duplex communication, connection with photo sensors and conductive safety edges, 4 x SPST NC relay output, low battery alarm, monitors up to 6 wireless devices

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PD30ETT15M5

PD30ETT15M5

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System: Through-beam, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: M8 Plug DC, Material: Stainless Steel, Sensing range: 15 m, Housing: 30 x 20 x 10,8 mm, Material: AISI 316L

Built-in amplifier booster photocell, Miniature, VDC steel, potentiometer on top

Photoelectric Through-beam Emitter, Range: 15000mm, Infrared light 850nm, Power Supply 10-30VDC, Connector M8, 10x30x20mm Stainless Steel Housing, IP69K, ECOLAB

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PD30ETT15PAM5SA

PD30ETT15PAM5SA

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System: Through-beam, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: M8 Plug DC, Output: DC PNP, Material: Stainless Steel, Sensing range: 15 m, Housing: 30 x 20 x 10,8 mm, Material: AISI 316L

Built-in amplifier booster photocell, Miniature, VDC steel, potentiometer on top

Photoelectric Through-beam Receiver, Range: 15000mm, PNP Output, N.O. and N.C., light and dark switching, Power Supply 10-30VDC, Connector M8, 10x30x20mm Stainless Steel Housing, IP69K, ECOLAB

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PD30ETT15

PD30ETT15

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System: Through-beam, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: Cable, Material: Stainless Steel, Sensing range: 15 m, Housing: 30 x 20 x 10,8 mm, Material: AISI 316L

Built-in amplifier booster photocell, Miniature, VDC steel, potentiometer on top

Photoelectric Through-beam Emitter, Range: 15000mm, Infrared light 850nm, Power Supply 10-30VDC, Cable connection, 10x30x20mm Stainless Steel Housing, IP69K, ECOLAB

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PD140FNT60QMU-02C

PD140FNT60QMU-02C

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System: Through-beam, Housing: rectangular, Sensing range: 60 ... 120 m, Connection: Terminals, Output: RELAY SPDT, Material: Metal, Sensing range: 60 m, Housing: 140 x 51 x 46 mm, Material: Aluminium + PC, Additional: Test input

Barrier photocell for industrial doors and gates, Transmitter/Receiver mute function

Photoelectric Through-beam Emitter and Receiver, Range: 60000mm, Infrared light 850nm, Power Supply 12-24Vac/DC, SPDT Relay Output, N.O. and N.C., light and dark switching, Screw Terminals, 51x46x140mm housing

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WSS2GA2BAT

WSS2GA2BAT

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System: Wireless Entrapment Protection Device, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: Terminals, Output: External Amplifier, Material: Plastic, Sensing range: 15 m, Housing: 22 x 45 x 214 mm, Material: PC , Additional: Wireless Sub Controller

Wireless entrapment protection device for industrial doors

Wireless Sub Controller for Industrial gates, 2,4 GHz duplex communication, connection with photo sensors and conductive safety edges, 2 x SPST relay output, low battery alarm, 16 channels

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PD30ETT15PASA

PD30ETT15PASA

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System: Through-beam, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: Cable, Output: DC PNP, Material: Stainless Steel, Sensing range: 15 m, Housing: 30 x 20 x 10,8 mm, Material: AISI 316L

Built-in amplifier booster photocell, Miniature, VDC steel, potentiometer on top

Photoelectric Through-beam Receiver, Range: 15000mm, PNP Output, N.O. and N.C., light and dark switching, Power Supply 10-30VDC, Cable connection, 10x30x20mm Stainless Steel Housing, IP69K, ECOLAB

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PD30ETT15NAM5SA

PD30ETT15NAM5SA

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System: Through-beam, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: M8 Plug DC, Output: DC NPN, Material: Stainless Steel, Sensing range: 15 m, Housing: 30 x 20 x 10,8 mm, Material: AISI 316L

Built-in amplifier booster photocell, Miniature, VDC steel, potentiometer on top

Photoelectric Through-beam Receiver, Range: 15000mm, NPN Output, N.O. and N.C., light and dark switching, Power Supply 10-30VDC, Connector M8, 10x30x20mm Stainless Steel Housing, IP69K, ECOLAB

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PD30ETT15NASA

PD30ETT15NASA

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System: Through-beam, Housing: rectangular, Sensing range: 6 ... 20 m, Connection: Cable, Output: DC NPN, Material: Stainless Steel, Sensing range: 15 m, Housing: 30 x 20 x 10,8 mm, Material: AISI 316L

Built-in amplifier booster photocell, Miniature, VDC steel, potentiometer on top

Photoelectric Through-beam Receiver, Range: 15000mm, NPN Output, N.O. and N.C., light and dark switching, Power Supply 10-30VDC, Cable connection, 10x30x20mm Stainless Steel Housing, IP69K, ECOLAB

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PD30CNT15NPRT

PD30CNT15NPRT

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Selected parameters SYSTEM Through-beam HOUSING rectangular SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT DC NPN MATERIAL Plastic Others SENSING RANGE 15 m HOUSING 30 x 20 x 10,8 mm MATERIAL ABS ADDITIONAL Remote teach

Amplific barrier photocell. Built-in, Miniature, VCC plastic, Teach-in cable or push button adjustment

Photoelectric Through-beam Receiver, Range: 15000mm, Infrared light 880nm, Power Supply 10-30VDC, Teach Input, NPN Output, N.O. or N.C., light or dark switching, Cable connection, 10x30x20mm housing

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S142CRXM924

S142CRXM924

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Selected parameters SYSTEM Photo-Amplifier HOUSING rectangular SENSING RANGE Dependend on sensor CONNECTION Plug and Socket OUTPUT RELAY SPDT MATERIAL Plastic Others SENSING RANGE Up to 50 m HOUSING 80 x 75 x 35 mm MATERIAL NORYL ADDITIONAL Multiplexed

Amplifier relay for photocell MOF series, multiplex system, master / slave of a cycle of 20 ms.

Amplifier for Through Beam sensors, Range up to: 50000mm, Manuael Adjustable Sensitivity, Disgnostic Functions, Alignment help, Power Supply : 24 VAC/DC, SPDT relay output, 11 pole Plug Connection, UL508, UL325, CSA, Multiplex System

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PA12BNT20POC2

PA12BNT20POC2

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Selected parameters SYSTEM Through-beam HOUSING M12 SENSING RANGE 6 ... 20 m CONNECTION Pig-tail OUTPUT DC PNP MATERIAL Metal Others SENSING RANGE 20 m HOUSING M12 x 42 mm MATERIAL Stainless Steel

Built-in amplifier photocell barrier, Control of elevators, escalators and accesses

Through-beam Photoelectric Receiver, Range 20m, Power Supply 10-30VDC, PNP Output, NO, Light Switching, Pig-Tail 5m Cable, ESPE type 2, EN12445, EN12453, EN12978, UL325

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S142CRXA115

S142CRXA115

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Selected parameters SYSTEM Photo-Amplifier HOUSING rectangular SENSING RANGE Dependend on sensor CONNECTION Plug and Socket OUTPUT RELAY SPDT MATERIAL Plastic Others SENSING RANGE Up to 50 m HOUSING 80 x 75 x 35 mm MATERIAL NORYL ADDITIONAL Multiplexed

Amplifier relay for MOF series photoelectric switches to operate master-slave mode

Amplifier for Through Beam sensors, Range up to: 50000mm, Automatic Adjustable Sensitivity, Disgnostic Functions, Alignment help, Power Supply : 115 Vac, SPDT relay output, 11 pole Plug Connection, UL508, UL325, CSA, Multiplex System

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ET1820-1

ET1820-1

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Barrera selected parameters BOX M18 SCOPE 6 ... 20 m M12 CC MATERIAL CONNECTION SYSTEM Other Metal SCOPE 20 m x 55.0 mm CASE MATERIAL M18 NPB

Barrier photocell in metal box M18 CC, emitter function

Through-beam Photoelectric Emitter, Range: 0-2000mm, Adjustable Sensitivity, Infrared Light 880nm, Plug connection, M18 housing

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MOFT20-M12-5

MOFT20-M12-5

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Selected parameters SYSTEM Through-beam HOUSING M12 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT External Amplifier MATERIAL Metal Others SENSING RANGE 20 m HOUSING M12 x 42 mm MATERIAL Stainless Steel

Photocell, external amplifier barrier, MOF series, Emitter

Through-beam for Separate Amplifier Transmitter, Optical Angle 5 deg., Cable connection, Modulated infrared light 880nm, M12 Stainless Steel and Polycarbonate housing

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MOFT20-M12-8

MOFT20-M12-8

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Selected parameters SYSTEM Through-beam HOUSING M12 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT External Amplifier MATERIAL Metal Others SENSING RANGE 20 m HOUSING M12 x 42 mm MATERIAL Stainless Steel

Photocell, external amplifier barrier, MOF series, Emitter

Through-beam for Separate Amplifier Transmitter, Optical Angle 8 deg., Cable connection, Modulated infrared light 880nm, M12 Stainless Steel and Polycarbonate housing

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ET1820

ET1820

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Selected parameters SYSTEM Through-beam HOUSING M18 SENSING RANGE 6 ... 20 m CONNECTION Cable MATERIAL Metal Others SENSING RANGE 20 m HOUSING M18 x 55,0 mm MATERIAL NPB

Barrier photocell in metal box M18 CC, emitter function

Through-beam Photoelectric Emitter, Range: 0-2000mm, Adjustable Sensitivity, Infrared Light 880nm, Cable connection, M18 housing

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MOFR-M12-5AX

MOFR-M12-5AX

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Selected parameters SYSTEM Through-beam HOUSING M12 SENSING RANGE Dependend on emitter CONNECTION Cable OUTPUT External Amplifier MATERIAL Metal Others HOUSING Ø10 x 42 mm MATERIAL Stainless Steel ADDITIONAL ATEX

Photocell, external amplifier barrier, MOF series, Receiver, ATEX version

Through-beam for Separate Amplifier, Optical Angle 5 deg., Cable connection, Modulated infrared light 880nm, ATEX, M12 Stainless Steel and Polycarbonate housing

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S142ARNT024

S142ARNT024

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Selected parameters SYSTEM Photo-Amplifier HOUSING rectangular SENSING RANGE Dependend on sensor CONNECTION Plug and Socket OUTPUT RELAY SPDT MATERIAL Plastic Others SENSING RANGE Up to 50 m HOUSING 80 x 75 x 35 mm MATERIAL NORYL ADDITIONAL Test input

Amplifier relay for MOF series photocell, NPN output and test input, Power supply 24 VAC

Amplifier for Through Beam sensors, Range up to: 50000mm, Adjustable Sensitivity, Disgnostic Functions, Alignment help, Power Supply : 24Vac, SPDT relay + NPN output, 11 pole Plug Connection, UL508, UL325, CSA, Test input

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MPFT15-M14-4

MPFT15-M14-4

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Selected parameters SYSTEM Through-beam HOUSING M14 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT External Amplifier MATERIAL Metal Others SENSING RANGE 15 m HOUSING M14 x 27,5 mm MATERIAL Stainless Steel

Photocell - MPF Series Amplifier Barrier, Emitter

Through-beam Photoelectric Sensor Transmitter, Optical Angle 4 deg., Cable connection, Modulated infrared light 880nm, M14 Stainless Steel Housing

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PB10CNT20

PB10CNT20

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Selected parameters SYSTEM Through-beam HOUSING Ø10 - Ø20 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT DC Mute MATERIAL Plastic Others SENSING RANGE 20 m HOUSING Ø10 x 42 mm MATERIAL PC ADDITIONAL Test input

Barrier photocell, elevator control, escalators and accesses, Emitter

Through-beam Photoelectric Emitter, Range 20m, Infrared modulated light 860nm, Power Supply 10-30VDC, 5m Cable, Mute Low, ESPE type 2, EN12445, EN12453, EN12978, UL325

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MPFT15-D18-4

MPFT15-D18-4

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Selected parameters SYSTEM Through-beam HOUSING Ø10 - Ø20 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT External Amplifier MATERIAL Plastic Others SENSING RANGE 15 m HOUSING Ø18 x 24 mm MATERIAL PC

Photocell - MPF Series Amplifier Barrier, Emitter

Through-beam Photoelectric Sensor Transmitter, Optical Angle 4 deg., Cable connection, Modulated infrared light 880nm, D18 Plastic Housing

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PE12C3T15NC

PE12C3T15NC

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Selected parameters SYSTEM Through-beam HOUSING Ø10 - Ø20 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT DC NPN MATERIAL Plastic Others SENSING RANGE 15 m HOUSING Ø12 (12,5) x 28,8 mm MATERIAL PC + PE12

Barrier photocell, elevator control, escalators and accesses

Through-beam Photoelectric Receiver, Code 3, Range 15m, Infrared modulated light 880nm, Power Supply 10-30VDC, NPN Output, NC, Dark Switching, 5m Cable, ESPE type 2, EN12445, EN12453, EN12978, UL325, UL508

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PE12C3T15NO

PE12C3T15NO

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Selected parameters SYSTEM Through-beam HOUSING Ø10 - Ø20 SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT DC NPN MATERIAL Plastic Others SENSING RANGE 15 m HOUSING Ø12 (12,5) x 28,8 mm MATERIAL PC + PE12

Barrier photocell, elevator control, escalators and accesses

Through-beam Photoelectric Receiver, Code 3, Range 15m, Infrared modulated light 880nm, Power Supply 10-30VDC, NPN Output, NO, Light Switching, 5m Cable, ESPE type 2, EN12445, EN12453, EN12978, UL325, UL508

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MOFR-M12-8AX

MOFR-M12-8AX

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Cable OUTPUT External Amplifier MATERIAL Metal Others HOUSING Ø10 x 42 mm MATERIAL Stainless Steel ADDITIONAL ATEX

Photocell, external amplifier barrier, MOF series, Receiver, ATEX version

Through-beam for Separate Amplifier, Optical Angle 8 deg., Cable connection, Modulated infrared light 880nm, ATEX, M12 Stainless Steel and Polycarbonate housing

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ET1820NPAS

ET1820NPAS

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Barrera selected parameters BOX M18 SYSTEM RANGE 6 ... 20 m Cable CONNECTION OUTPUT MATERIAL Metal Other NPN CC SCOPE 20 m x 55.0 mm CASE MATERIAL M18 NPB

Barrier photocell in metal box M18 CC, receiver function

Through-beam Photoelectric Receiver, Range: 0-20000mm, Adjustable Sensitivity, infrared light 880nm, Power Supply : 10to40 VDC, N.O. and N.C., light and dark switching, Cable connection, M18 housing

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PD30CNT15PPRT

PD30CNT15PPRT

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Selected parameters SYSTEM Through-beam HOUSING rectangular SENSING RANGE 6 ... 20 m CONNECTION Cable OUTPUT DC PNP MATERIAL Plastic Others SENSING RANGE 15 m HOUSING 30 x 20 x 10,8 mm MATERIAL ABS ADDITIONAL Remote teach

Amplific barrier photocell. Built-in, Miniature, VCC plastic, Teach-in cable or push button adjustment

Photoelectric Through-beam Receiver, Range: 15000mm, Infrared light 850nm, Power Supply 10-30VDC, Teach Input, PNP Output, N.O. or N.C., light or dark switching, Cable connection, 10x30x20mm housing

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