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E3T-[]-UL

Ultracompact, Ultrathin Photoelectric Sensor with Built-in Amplifier

E3T-[]-UL

The lineup has been expanded to E3T series with UL certified products

Item list of E3T-[]-UL

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last update: January 5, 2026

Sensing method Through-beam
Appearance Rectangular type (Side-view)
3954_sp_1_1		 Rectangular type (Flat)
3954_sp_1_2
NPN
output		 Light-ON E3T-ST31-UL E3T-ST11-UL
E3T-ST11M-UL		 E3T-ST21-UL
E3T-ST21M-UL		 E3T-FT11-UL E3T-FT21-UL
Dark-ON E3T-ST32-UL E3T-ST12-UL
E3T-ST12M-UL		 E3T-ST22-UL
E3T-ST22M-UL		 E3T-FT12-UL E3T-FT22-UL
PNP
output		 Light-ON E3T-ST33-UL E3T-ST13-UL
E3T-ST13M-UL		 E3T-ST23-UL
E3T-ST23M-UL		 E3T-FT13-UL E3T-FT23-UL
Dark-ON E3T-ST34-UL E3T-ST14-UL
E3T-ST14M-UL		 E3T-ST24-UL
E3T-ST24M-UL		 E3T-FT14-UL E3T-FT24-UL
Sensing distance 2 m 1 m 300 mm 500 mm 300 mm
Standard sensing
object		 Opaque, 3-mm dia. min. Opaque, 2-mm dia. min. Opaque, 1.3-mm dia. min.
Minimum detectable
object
(reference value)		 Opaque, 3-mm dia. Opaque, 2-mm dia. Opaque, 1.3-mm dia.
Directional angle Emitter: 2° to 20°
Receiver: 2° to 70°		 Emitter: 3° to 25°
Receiver: 3° min.
Light source
(wavelength)		 Red LED (650 nm)
Power supply
voltage		 12 to 24 VDC ±10%, ripple (p-p) 10% max. Class 2
Current consumption Emitter 10 mA max., Receiver 20 mA max.
Control output Load power supply voltage: 26.4 VDC max. Class 2
Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA,
1 V max. for load current of less than 10 mA), Off-state current: 10 μA max.
Open collector output
Indicators Operation indicator (orange), Stability indicator (green)
Protection circuits Power supply and control output reverse polarity protection,
Output short-circuit protection
Response time Operate or reset: 1 ms max.
Ambient illumination Incandescent lamp: 5,000 lx max., Sunlight: 10,000 lx max.
Ambient temperature
range		 Operating: -25 to 55°C
Storage: -40 to 70°C
(with no icing or condensation) *2
Ambient humidity range Operating: 35% to 85%
Storage: 35% to 95%
(with no condensation)
Insulation resistance 20 MΩ min. at 500 VDC
Dielectric strength 1,000 VAC, 50/60 Hz for 1 min.
Vibration resistance
(destruction)		 10 to 2,000 Hz, 1.5-mm double amplitude or 300 m/s2 for 0.5 hours each
in X, Y, and Z directions
Shock resistance
(destruction)		 1,000 m/s2
3 times each in X, Y, and Z directions
Degree of
protection		 IP67 (IEC 60529)
Connection method Pre-wired (standard length: 2 m)
Weight
(packed state)		 Approx. 40 g
Materials Case PBT (polybutylene terephthalate)
Display window Denatured polyarylate
Lens Denatured polyarylate
Conformity standards CE Marking
MTTFd (Year) 398
Accessories *1 Instruction manual, Set screws for mounting (Side-view Sensors: M2×14,
Flat Sensors: M2×8), Nuts

Note: 1. Altitude: Up to 2,000 m, Pollution degree: 3, Enclosure type: Type1.
*1. Only the Instruction Manual is included with an M3-mounting Sensor (E3T-ST[][]M). Order the Set of Mounting Screws separately if required.
*2. UL temperature rating is 45°C maximum in operation.

Sensing method Retro-reflective (without M.S.R. function)
Appearance Rectangular type (Side-view)
3954_sp_2_1
NPN
output		 Light-ON E3T-SR41-UL
Dark-ON E3T-SR42-UL
PNP
output		 Light-ON E3T-SR43-UL
Dark-ON E3T-SR44-UL
Sensing distance 200 mm (30 mm) *1 (Using the E39-R4)
100 mm (10 mm) *1 (Using the E39-R37-CA)
Standard sensing object Opaque, 27-mm dia. min.
Minimum detectable object
(reference value)		 2-mm dia. (Sensing distance 100 mm)
Directional angle 2° to 20°
Light source (wavelength) Red LED (650 nm)
Power supply voltage 12 to 24 VDC ±10%, ripple (p-p) 10% max. Class 2
Current consumption 20 mA max.
Control output Load power supply voltage: 26.4 VDC max. Class 2
Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA,
1 V max. for load current of less than 10 mA), Off-state current: 10μA max.
Open collector output
Indicators Operation indicator (orange), Stability indicator (green)
Protection circuits Power supply and control output reverse polarity protection,
Output short-circuit protection,
Mutual interference prevention
Response time Operate or reset: 1 ms max.
Ambient illumination Incandescent lamp: 5,000 lx max., Sunlight: 10,000 lx max.
Ambient temperature range Operating: -25 to 55°C
Storage: -40 to 70°C
(with no icing or condensation) *2
Ambient humidity range Operating: 35% to 85%
Storage: 35% to 95%
(with no condensation)
Insulation resistance 20 MΩ min. at 500 VDC
Dielectric strength 1,000 VAC, 50/60 Hz for 1 min.
Vibration resistance
(destruction)		 10 to 2,000 Hz, 1.5-mm double amplitude or 300 m/s2 for 0.5 hours each in X, Y,
and Z directions
Shock resistance
(destruction)		 1,000 m/s2
3 times each in X, Y, and Z directions
Degree of protection IP67 (IEC 60529)
Connection method Pre-wired (standard length: 2 m)
Weight (packed state) Approx. 20 g
Materials Case PBT (polybutylene terephthalate)
Display window Denatured polyarylate
Lens Methacrylc resin
MTTFd (Year) 696
Accessories Instruction manual, Set screws for mounting (Side-view Sensors: M2×14), Nuts,
Small Reflector (E39-R4)

Note: 1. Altitude: Up to 2,000 m, Pollution degree: 3, Enclosure type: Type1.
*1. Values in parentheses indicate the minimum required distances between the Sensors and Reflectors.
*2. UL temperature rating is 45°C maximum in operation.

Sensing method Diffuse-reflective Limited-reflective BGS-reflective
Appearance Rectangular type
(Flat)
3954_sp_3_1		 Rectangular type
(Side-view)
3954_sp_3_2		 Rectangular type
(Flat)
3954_sp_3_3
NPN
output		 Light-ON E3T-FD11-UL
E3T-FD11M-UL		 E3T-SL11-UL E3T-SL21-UL E3T-FL11-UL E3T-FL21-UL
Dark-ON E3T-FD12-UL
E3T-FD12M-UL		 E3T-SL12-UL E3T-SL22-UL E3T-FL12-UL E3T-FL22-UL
PNP
output		 Light-ON E3T-FD13-UL
E3T-FD13M-UL		 E3T-SL13-UL E3T-SL23-UL E3T-FL13-UL E3T-FL23-UL
Dark-ON E3T-FD14-UL
E3T-FD14M-UL		 E3T-SL14-UL E3T-SL24-UL E3T-FL14-UL E3T-FL24-UL
Sensing distance 5 to 30 mm 5 to 15 mm 5 to 30 mm 1 to 15 mm 1 to 30 mm
Standard sensing
object		 White paper: 100×100 mm
Minimum
detectable object
(reference value)		 0.15-mm dia.
(sensing distance 10 mm)		 0.15-mm dia.
(sensing distance 10 mm)		 0.15-mm dia. non-glossy object
(sensing distance 10 mm)
Hysteresis
(white paper)		 6 mm max. 2 mm max. 6 mm max. 0.5 mm max. 2 mm max.
Black/white error --- 15% max.
Light source
(wavelength)		 Red LED (650 nm)
Power supply
voltage		 12 to 24 VDC ±10%, ripple (p-p) 10% max. Class 2
Current
consumption		 20 mA max.
Control output Load power supply voltage: 26.4 VDC max. Class 2
Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA, 1 V max. for load current of less than 10 mA), Off-state current: 10μA max.
Open collector output
Indicators Operation indicator (orange), Stability indicator (green)
Protection circuits Power supply and control output reverse polarity protection,
Output short-circuit protection,
Mutual interference prevention
Response time Operate or reset: 1 ms max.
Ambient
illumination		 Incandescent lamp: 5,000 lx max., Sunlight: 10,000 lx max.
Ambient
temperature range		 Operating: -25 to 55°C
Storage: -40 to 70°C
(with no icing or condensation) *1
Ambient humidity
range		 Operating: 35% to 85%
Storage: 35% to 95%
(with no condensation)
Insulation resistance 20 MΩ min. at 500 VDC
Dielectric strength 1,000 VAC, 50/60 Hz for 1 min.
Vibration
resistance
(destruction)		 10 to 2,000 Hz, 1.5-mm double amplitude or 300 m/s2 for 0.5 hours each in X, Y, and Z directions
Shock resistance
(destruction)		 1,000 m/s2
3 times each in X, Y, and Z directions
Degree of protection IP67 (IEC 60529)
Connection method Pre-wired (standard length: 2 m)
Weight
(packed state)		 Approx. 20 g Approx. 20 g
Materials Case PBT
(polybutylene terephthalate)		 PBT (polybutylene terephthalate)
Display window Denatured polyarylate Denatured polyarylate
Lens Denatured polyarylate Denatured polyarylate
MTTFd (Year) 696 696 653
Accessories Instruction manual, Set
screws for mounting
(M2×14), Nuts *2		 Instruction manual, Set screws for mounting (M2×14), Nuts

Note: 1. Altitude: Up to 2,000 m, Pollution degree: 3, Enclosure type: Type1.
*1. UL temperature rating is 45°C maximum in operation.
*2. Only the Instruction Manual is included with an M3-mounting Sensor (E3T-FD[][]M). Order the Set of Mounting Screws separately if required.

last update: January 5, 2026

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