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2
Standard Photoelectric Sensors
Application
Ordering Information
Sensors
E3T-SL limited-reflective models (side view)
• Minimum detection object: 0.15 mm dia.
• Limited-reflective optics reduce the influence of changing
backgrounds and surrounding metal for enhanced detec-
tion stability.
E3T-FD Diffuse-reflective Models (Flat)
• Minimum detection object: 0.15 mm dia.
• 3.5 mm thickness for installations with limited space.
Sensing
method
Appearance
Connection method
Sensing
distance
Opera-
tion
mode
Order code
NPN output
PNP output
Through-
beam
Side-view
-
-
2 m
*1
*1. For pre-wired models with robotic cables add '-R' to the order code (example: E3T-FT21R 2M). For details on robotic cables refer to page 12.
*2
*2. For pre-wired models with M8 connector plug or e-CON connector contact your OMRON representative
Light-ON
E3T-ST11 2M
E3T-ST13 2M
Dark-ON
E3T-ST12 2M
E3T-ST14 2M
Light-ON
E3T-ST21 2M
E3T-ST23 2M
Dark-ON
E3T-ST22 2M
E3T-ST24 2M
Flat
Light-ON
E3T-FT11 2M
E3T-FT13 2M
Dark-ON
E3T-FT12 2M
E3T-FT14 2M
Light-ON
E3T-FT21 2M
E3T-FT23 2M
Dark-ON
E3T-FT22 2M
E3T-FT24 2M
Retro-
reflective
Side-view
*3
*3. Values in parentheses indicate the minimum required sensing distance between the sensor and the reflector. For applications with shorter distances between the
sensor and the reflector contact your OMRON representative.
Light-ON
E3T-SR41-C 2M
*4
E3T-SR43-C 2M
*4
*4. Order reflector separately. For ordering models with included reflectors contact your OMRON representative.
Dark-ON
E3T-SR42-C 2M
*4
E3T-SR44-C 2M
*4
Diffuse-
reflective
Flat
Light-ON
E3T-FD11 2M
E3T-FD13 2M
Dark-ON
E3T-FD12 2M
E3T-FD14 2M
Limited-
reflective
Side-view
Light-ON
E3T-SL11 2M
E3T-SL13 2M
Dark-ON
E3T-SL12 2M
E3T-SL14 2M
Light-ON
E3T-SL21 2M
E3T-SL23 2M
Dark-ON
E3T-SL22 2M
E3T-SL24 2M
Diffuse
reflective
(background
suppression)
Flat
Light-ON
E3T-FL11 2M
E3T-FL13 2M
Dark-ON
E3T-FL12 2M
E3T-FL14 2M
Light-ON
E3T-FL21 2M
E3T-FL23 2M
Dark-ON
E3T-FL22 2M
E3T-FL24 2M
Red light
1 m
(Sensitivity Adjustment
Unit can be used.)
300 mm
500mm
300 mm
200 mm
[30 mm]
100 mm
[10 mm]
5 to 30 mm
5 to 15 mm
5 to 30 mm
1 to 15 mm
1 to 30 mm