Sensors

M2-mounting Sensors

A set of mounting screws is included with the Sensor. 

Sensing
 method

Appearance

Sensing distance
 (Red light)

Operation
 mode

Model

NPN output

PNP output

Through-beam
 (Emitter
 +
 Receiver) *1

 image

2 m (Red light)
 (Sensitivity Adjustment
 Unit can be used.)

Light-ON

E3T-ST31 2M *4

E3T-ST33 2M *4

Dark-ON

E3T-ST32 2M *4

E3T-ST34 2M *4

1 m (Red light)
 (Sensitivity Adjustment
 Unit can be used.)

Light-ON

E3T-ST11 2M *4

E3T-ST13 2M *4

Dark-ON

E3T-ST12 2M *4

E3T-ST14 2M *4

300 mm (Red light)

Light-ON

E3T-ST21 2M

E3T-ST23 2M

Dark-ON

E3T-ST22 2M

E3T-ST24 2M

2 m (Infrared light)

Light-ON

E3T-ST31F 2M

E3T-ST33F 2M

Dark-ON

E3T-ST32F 2M

E3T-ST34F 2M

1 m (Infrared light)

Light-ON

E3T-ST11F 2M

E3T-ST13F 2M

Dark-ON

E3T-ST12F 2M

E3T-ST14F 2M

300 mm (Infrared light)

Light-ON

E3T-ST21F 2M

E3T-ST23F 2M

Dark-ON

E3T-ST22F 2M

E3T-ST24F 2M

image

500 mm (Red light)

Light-ON

E3T-FT11 2M *4

E3T-FT13 2M *4

Dark-ON

E3T-FT12 2M *4

E3T-FT14 2M *4

300 mm (Red light)

Light-ON

E3T-FT21 2M

E3T-FT23 2M

Dark-ON

E3T-FT22 2M

E3T-FT24 2M

500 mm (Infrared light)

Light-ON

E3T-FT11F 2M

E3T-FT13F 2M

Dark-ON

E3T-FT12F 2M

E3T-FT14F 2M

300 mm (Infrared light)

Light-ON

E3T-FT21F 2M

E3T-FT23F 2M

Dark-ON

E3T-FT22F 2M

E3T-FT24F 2M

Retro-
 reflective

image

Using the E39-R4 Reflector
 provided 200 mm [30 mm] *2
 Using the E39-R37-CA
 100 mm [10 mm] *2
 (Red light)

Light-ON

E3T-SR41 2M *3 *4

E3T-SR43 2M *3 *4

Dark-ON

E3T-SR42 2M *3 *4

E3T-SR44 2M *3 *4

Diffuse-
 reflective

image

5 to 30 mm (Red light)

Light-ON

E3T-FD11 2M *4

E3T-FD13 2M *4

Dark-ON

E3T-FD12 2M *4

E3T-FD14 2M *4

Limited-
 reflective

image

5 to 15 mm (Red light)

Light-ON

E3T-SL11 2M *4

E3T-SL13 2M *4

Dark-ON

E3T-SL12 2M *4

E3T-SL14 2M *4

5 to 30 mm (Red light)

Light-ON

E3T-SL21 2M *4

E3T-SL23 2M *4

Dark-ON

E3T-SL22 2M *4

E3T-SL24 2M *4

BGS-
 reflective

image

1 to 15 mm (Red light)

Light-ON

E3T-FL11 2M *4

E3T-FL13 2M *4

Dark-ON

E3T-FL12 2M *4

E3T-FL14 2M *4

1 to 30 mm (Red light)

Light-ON

E3T-FL21 2M *4

E3T-FL23 2M *4

Dark-ON

E3T-FL22 2M *4

E3T-FL24 2M *4

M3-mounting Sensors

A set of mounting screws is not included with the Sensor. Order a Screw Set separately if required. 

Sensing
 method

Appearance

Sensing distance
 (Red light)

Operation mode

Model

NPN output

PNP output

Through-beam
 (Emitter
 +
 Receive) *1

image

1 m
 (Red light)

Light-ON

E3T-ST11M 2M

E3T-ST13M 2M

Dark-ON

E3T-ST12M 2M

E3T-ST14M 2M

300 mm
 (Red light)

Light-ON

E3T-ST21M 2M

E3T-ST23M 2M

Dark-ON

E3T-ST22M 2M

E3T-ST24M 2M

1 m
 (Infrared light)

Light-ON

E3T-ST11MF 2M

E3T-ST13MF 2M

Dark-ON

E3T-ST12MF 2M

E3T-ST14MF 2M

300 mm
 (Infrared light)

Light-ON

E3T-ST21MF 2M

E3T-ST23MF 2M

Dark-ON

E3T-ST22MF 2M

E3T-ST24MF 2M

Diffuse-
 reflective

image

5 to 30 mm
 (Red light)

Light-ON

E3T-FD11M 2M

E3T-FD13M 2M

Dark-ON

E3T-FD12M 2M

E3T-FD14M 2M

Limited-
 reflective

image

5 to 15 mm
 (Red light)

Light-ON

E3T-SL11M 2M

E3T-SL13M 2M

Dark-ON

E3T-SL12M 2M

E3T-SL14M 2M

5 to 30 mm
 (Red light)

Light-ON

E3T-SL21M 2M

E3T-SL23M 2M

Dark-ON

E3T-SL22M 2M

E3T-SL24M 2M

1. The model number of the Emitter is expressed by adding an "L" to the set model number in the table.
          Example: E3T-ST11-L 2M
        The model number of the Receiver is expressed by adding a "D" to the set model number in the table.
          Example: E3T-ST11-D 2M
 2. Values in parentheses indicate the minimum required distance between the Sensor and Reflector.
 3. Models are available either with or without the E39-R37-CA Reflector included.
        Models with E39-R37-CA Reflector: E3T-SR4[]-S
        Models without Reflector: E3T-SR4[]-C
 4. Models with robot (bending-resistant) cable are also available with “R” in the model number.
        (Example: E3T-ST11R 2M)

Small Cylindrical Sensors

A set of mounting nuts is included with the Sensor. 

Sensing method

Appearance

Sensing distance

Operation mode

Model

NPN output

PNP output

Through-beam
 (Emitter
 +
 Receive)

image

1 m
 (Red light)

Light-ON

---

---

Dark-ON

E3T-CT12 2M

E3T-CT14 2M

image

500 mm
 (Red light)

Light-ON

---

---

Dark-ON

E3T-CT22S 2M

E3T-CT24S 2M

Diffuse-
 reflective
 (with adjuster)

image

3 to 50 mm
 Infrared light

Light-ON

E3T-CD11 2M

E3T-CD13 2M

Dark-ON

---

---

Accessories (Order Separately)

Accessories for M2-mounting Sensors

These accessories are not included with the Sensor. Order them separately if required. 

Name

Applicable
 Sensor

Model

Quantity

Remarks

Slit for Through-
 beam Side-view
 Sensors

0.5 dia.

E3T-ST3[][]

E39-S63

2
 (One each for
 Emitter and
 Receiver;
 common with
 Slit widths of
 1 dia. And
 0.5 dia.)

Sensing distance 200 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

E3T-ST1[][]

Sensing distance 100 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

E3T-ST2[][]

Sensing distance 30 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

1 dia.

E3T-ST3[][]

Sensing distance 600 mm,
 Minimum detectable object (reference value)
 1-mm dia.

E3T-ST1[][]

Sensing distance 300 mm,
 Minimum detectable object (reference value)
 1-mm dia.

E3T-ST2[][]

Sensing distance 100 mm,
 Minimum detectable object (reference value)
 1-mm dia.

Slit for Through-
 beam Flat Sensors

0.5 dia.

E3T-FT1[][]

E39-S64

Sensing distance 50 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

E3T-FT2[][]

Sensing distance 30 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

1 dia.

E3T-FT1[][]

Sensing distance 100 mm,
 Minimum detectable object (reference value)
 1-mm dia.

E3T-FT2[][]

Sensing distance 50 mm,
 Minimum detectable object (reference value)
 1-mm dia.

Sensitivity Adjustment Unit
 for Through-beam Side-view
 Sensors with Red Light

E3T-ST3[]

E39-E10

1

Sensing distance (reference value)
 1,200 to 1,800 mm

E3T-ST1[]

Sensing distance (reference value)
 300 to 800 mm

Mounting Brackets for Side-
 view Sensors *1

E3T-S[][][][]

E39-L116

1

Nut plate provided

E39-L117

E39-L118

Mounting Brackets for Flat
 Sensors *1

E3T-F[][][][]

E39-L119

---

E39-L120

Screw Set for Side-view
 Sensors *2 *3

E3T-S[][][][]

E39-L164

2 for each

Material: Iron (Same type as provided with the
 Sensor.)
 Contents: Set screws (M2×14), Hexagonal nuts

Screw Set for Flat Sensors
 *2 *3

E3T-F[][][][]

E39-L165

Material: Iron (Same type as provided with the
 Sensor.)
 Contents: Set screws (M2×8), Hexagonal nuts

SUS Screw Set for Flat
 Sensors *2

E3T-F[][][][]

E39-L172

2

Material: SUS304
 Contents: Bolt with hexagonal hole (M2×6)

SUS Screw Set for Side-
 view Sensors *2

E3T-S[][][][]

E39-L173

2 for each

Material: SUS304
 Contents: Bolt with hexagonal hole (M2×12),
 Hexagonal nuts, Spring washers, Flat washers

1. When using Through-beam Sensors (E3T-ST[][], E3T-FT[][]), order one Bracket for the Emitter and one for the
        Receiver.
 2. Order two Sets, one for the Emitter and one for the Receiver, for Through-beam Sensors (E3T-ST[][] or E3T-FT[][]).
        This is the Screw Set for mounting the Sensor to the Mounting Bracket. Order this Set if you lose the screws. Do not
        use this Screw Set to mount the Mounting Bracket to the equipment.
 3. This is included with the Sensor.

Accessories for M3-mounting Sensors

These accessories are not included with the Sensor. Order them separately if required. 

Name

Applicable
 Sensor

Model

Quantity

Remarks

Slits for Through-
 beam Side-view
 Sensors

0.5 dia.

E3T-ST1[]M[]

E39-S76A

2
 (One each for
 Emitter and
 Receiver)

Sensing distance 100 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

E3T-ST2[]M[]

Sensing distance 30 mm,
 Minimum detectable object (reference value)
 0.5-mm dia.

1 dia.

E3T-ST1[]M[]

E39-S76B

Sensing distance 300 mm,
 Minimum detectable object (reference value)
 1-mm dia.

E3T-ST2[]M[]

Sensing distance 100 mm,
 Minimum detectable object (reference value)
 1-mm dia.

Mounting Bracket for Side-
 view Sensors *1

E3T-S[][][]M[]

E39-L166

1

Nut plate provided

Mounting Bracket for Flat
 Sensors

E3T-FD[][]M

E39-L167

---

Back-mounting Spacer for
 Flat Sensors

E39-L168

Use this Spacer when mounting a Flat Sensor
 (E3T-FD[][]M) from the back.

SUS Screw Set for Flat
 Sensors *2

E3T-FD[][]M

E39-L170

2

Material: SUS304
 Contents: Bolt with hexagonal hole (M3×6)

SUS Screw Set for Side-
 view Sensors *2 *3

E3T-S[][][]M[]

E39-L171

2 for each

Material: SUS304
 Contents: Bolt with hexagonal hole (M3×15),
 Hexagonal nuts, Spring washers, Flat washers

1. When using Through-beam Sensors (E3T-ST[][]M[]), order one bracket for the Emitter and one for the Receiver.
 2. This is the Screw Set for mounting the Sensor to the Mounting Bracket. Order this Set if you loose the screws. Do not
        use this Screw Set to mount the Mounting Bracket to the equipment.
 3. Order two Sets, one for the Emitter and one for the Receiver, for Through-beam Sensors (E3T-ST[][]M[]).

Accessories for Small Cylindrical Sensors

Name

Applicable
 Sensor

Model

Quantity

Remarks

SUS Nut Set for Through-
 beam Sensors *

E3T-CT[][]
 E3T-CT[][]S

E39-M5

4 (Hexagonal nuts),
 2 (Toothed washers)

Material: SUS303
 (Same type as provided with the Sensor.)

SUS Nut Set for Diffuse-
 reflective Sensors

E3T-CD[][]

E39-M6

2 (Hexagonal nuts),
 1 (Toothed washers)

Adjustment Driver for
 Diffuse-reflective Sensors

E39-G17

1

This Driver is used to turn the sensitivity
 adjuster.
 Provided with E3T-CD[][]

* This Nut Set is for the Emitter/Receiver. This is the Nut Set for mounting the Sensor. Order this Set if you lose the
   screws.

Accessories for All Sensors

Name

Applicable
 Sensor

Model

Quantity

Remarks

Small Reflectors
 (for Retro-reflective Sensors)

E3T-SR4[]

E39-R4

1

Sensing distance 200 mm [30 mm] *1
 Minimum detectable object 2-mm dia.
 Provided with the E3T-SR4[]

E3T-SR4[]-S

E39-R37-CA *2

Sensing distance 100 mm [10 mm] *1
 Minimum detectable object 2-mm dia.
 Provided with the E3T-SR4[]-S

Tape Reflectors
 (for Retro-reflective Sensors)

E3T-SR4[]-C

E39-RS1-CA *2

Sensing distance 100 mm [10 mm] *1
 Minimum detectable object 2-mm dia.
 Use Tape Reflectors in combination with
 the E3T-SR4[]-C, which does not come
 with a Reflector.

E39-RS2-CA *2

E39-RS3-CA *2

1. Values in parentheses indicate the minimum required distance between the Sensor and Reflector.
 2. The E3T-SR4[] cannot be used with the E39-R37 or E39-RS1/2/3 (without CA) Tape Reflectors.
        The E39-[]-CA Reflector is for use only with the E3T-SR4[]. It cannot be used with other Sensors.