Photo Sensor 3 m Sensing Distance, PNP, Cable Type - BJ3M-PDT-P

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500.00 Grams


Autonics Rectangular Photoelectric Sensor, BJ3M-PDT-P

PNP open collector, Cable type connection, General type

The Autonics photoelectric sensor BJ3M-PDT-P is Polarized retroreflective sensing type, comes in a rectangular shape, sensing distance of 3m (MS-2A), Response time of Max. 1ms and rectangular installation. The standard rectangular photo sensor can be used in diverse applications requiring non-contact detection of Opaque material.

As a quick report, this photoelectric sensor provides:

  • Polarized retroreflective sensing type
  • 3m (MS-2A) sensing distance
  • Opaque material of min. Ø75mm sensing target
  • Red LED (660nm) Light source
  • 12-24 VDC ±10% (ripple P-P: max. 10%) power supply
  • PNP open collector control output
  • Operation mode: Light ON/Dark ON (set by switch)
  • Sensitivity adjuster
  • Compact size: W 10.6 × H 32 × L 20 mm
  • IP65 ingress protection structure according to IEC standards


This Autonics photoelectric sensor's case is made of Polycarbonate + Acrylonitrile butadiene styrene, its LED Cap is made of Polycarbonate and its Sensing part is Polymethyl methacrylate made.

The BJ3M-PDT-P features IP65 ingress protection.


The Autonics sensor BJ3M-PDT-P features standard cable type connection. This cable covers the sensor's 3 wires. It is Ø3.5mm in diameter and 2 meters in length.

Sensing specifications

The sensing target for this photoelectric sensor is Opaque material of min. Ø75mm. The maximum distance that this sensor can detect its standard sensing target is 3m (MS-2A). This so-called sensing distance differs from one sensing target to another, based on their material.

Control output

The BJ3M-PDT-P features PNP open collector control output. PNP stands for Positive-Negative-Positive transistors.


There are limitations in temperature and humidity in which BJ3M-PDT-P photoelectric sensor is used:

  • Storage temperature: -40 … 70°C
  • Storage humidity: 35 to 85%RH
  • Ambient temperature: -25 … 55°C
  • Ambient humidity: 35 to 85%RH

Environment resistance is rated at no freezing or condensation.

Industries / Applications

  • Automatic Warehouse Rack
  • Application example of automation system
  • Rubber Extrusion / Plastic Injection Molding Process(Video)
  • Potato chip manufacturing and packaging process
  • Transfer of Packaged Goods
  • Glass Manufacturing
  • Beverage Can Transport Conveyors
  • Parking Tower Entry/Exit


Still want to know more? Click here to find out about Autonics Photoelectric Sensors working principles.

Series Information

BJ Series

Compact High Performance Photoelectric Sensors

The Autonics BJ series compact photoelectric sensors feature high performance and excellent noise immunity for accurate and reliable presence detection. Light ON/Dark ON operation mode switch and sensitivity adjusters are available for easy configuration and set up (except BJG-DDT). The sensors are available in various types and options, making it ideal for diverse applications. The BJ series is available in long distance type, BGS (background suppression) reflective type, transparent glass sensing type, and micro spot types, and the sensors are available in cable types and connector types (long distance type models).

BJ Series Main features

Common Features
  • Compact size: W10.6×H32×L20mm
  • Light ON/Dark ON operation mode switch (except BJG30-DDT)
  • Sensitivity adjuster (except BJG30-DDT)
  • Built-in reverse polarity protection circuit and output overcurrent (short-circuit) protection circuit
  • Mutual interference prevention function (except BGS reflective type)
  • Excellent noise immunity and minimal influence from ambient light
  • IP65 protection structure (IEC standard)/IP67 for BJ-C connector types
Long Distance Type
  • High performance lens with long sensing distance

          - Through-beam type: 15m

          - Diffuse reflective type: 1m

          - Polarized retroreflective type: 3m (MS-2A)

  • M.S.R. (Mirror Surface Rejection) function (polarized retroreflective type) for detecting mirrors or highly reflective targets
  • Mutual interference prevention function (except through-beam type)

BGS Reflective Type

  • BGS (background suppression) minimizes detection errors from background objects and the color or material of target objects. Also the detecting distance can be configured with the sensitivity adjuster.
  • Visible light source allows users to identify the sensing area, and the tiny spot size minimizes influence from surrounding objects
Transparent Glass Sensing Type/Micro Spot Type
  • Stable detection of transparent targets (LCD, PDP, glass etc.) (transparent glass sensing types)
  • Check sensing area with visible micro spot (micro spot types)
  • Detect tiny objects (minimum target size: Ø0.2mm copper wire)

About Autonics Photoelectric Sensors

"Autonics" is a leading provider of automation solutions from South Korea. Autonics products are trusted and adopted by engineers in various industrial applications and their technology is widely applied in day-to-day automation devices. This company represents 21 Photoelectric Sensors series:

  • BRQ Series: Cylindrical Photoelectric Sensors
  • BJ SeriesCompact High Performance Photoelectric Sensors
  • BJX Series: Compact Long Distance Photoelectric Sensors
  • BR(NARROW BEAM REFLECTIVE) Series: Cylindrical Photoelectric Sensors (Narrow Beam Reflective Type)
  • BTF Series: Ultra-Compact, Thin Type Photoelectric Sensors
  • BTS Series: Ultra-Compact, Slim Type Photoelectric Sensors
  • BL Series: Liquid Level Photoelectric Sensors
  • BJR Series: Oil-Resistant/Oil-Proof Photoelectric Sensors
  • BYD Series: Compact Photoelectric Sensors
  • BM Series: Economical General-Purpose Photoelectric Sensors
  • BH Series: Front/Side Mount Photoelectric Sensors
  • BJP Series: Photoelectric Sensors for PCB Detection
  • BUM Series: 4-Channel U-Shaped Photoelectric Sensors
  • BA Series: Diffuse Reflective Photoelectric Sensors with Long Sensing Distance
  • BMS Series: Side Sensing Type Photoelectric Sensors
  • BX Series: Universal AC/DC Photoelectric Sensors (Wire Terminal Type)
  • BUP Series: U-Shaped Photoelectric Sensors
  • BEN Series: Universal AC/DC Photoelectric Sensors
  • BPS Series: Flat Type Photoelectric Sensors
  • BY Series: Compact Photoelectric Sensors with Synchronous Detection
  • BC Series: Color Mark Sensors

Autonics Photoelectric Sensors are mainly used in:

  • Automotive industry
  • Packaging industry
  • Elevator Industry
  • Semiconductor/Display Industry
  • Machine Tools Industry
  • Plastics/Rubber Industry
  • Food/beverage Manufacturing
  • Logistics Industry


You may be interested to see this product's catalog. If so, please click to view the BJ3M-PDT-P datasheet.
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Warranty Information

One Year Warranty
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Additional Information

ensing type:
Retroreflective type(built-in polarizing filter)
Sensing distance:
Sensing target:
Opaque material of min. Ø75mm
Light source:
Red LED(660nm)
Response time:
Max. 1ms
Power supply:
12-24VDC ±10%(ripple P-P: max. 10%)
Current consumption:
Max. 30mA
Sensitivity adjustment:
Sensitivity adjuster
Operation mode:
Light ON/Dark ON(set by switch)
Control output:
PNP open collector
Connection type:
Cable type(Ø3.5, 2m)
Environment_Ambient illumination:
Sunlight: Max. 11,000lx, Incandescent lamp: Max. 3,000lx (received illumination)
Environment_Ambient temperature:
-25 to 55℃, storage: -40 to 70℃
Protection structure:
IP65 Approval
Environment_Ambient humidity:
35 to 85% RH, storage: 35 to 85% RH
Case: Polycarbonate+Acrylonitrile butadiene styrene, LED Cap: Polycarbonate, Sensing part: Polymethyl methacrylate,
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