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E3T-ST22 2M

Ultracompact, Ultrathin Photoelectric Sensor with Built-in Amplifier


Through-beam type, Sensing distance 300 mm, Dark-ON, NPN, Pre-wired models, Red LED (650 nm)

Sensing method Through-beam type
Sensing distance 300 mm
Light source Red LED (650 nm)
Connection method Pre-wired models

Item list of E3T

  • Ratings/Performance
ShapeSquare type
Sensing methodThrough-beam type
Sensing distance300 mm
Standard sensing objectOpaque, 2 mm dia. min.
Minimum sensing object2 mm min. dia. (Opaque)
Directional angleEmitter: 2 to 20 °
Receiver: 2 to 70 °
Light sourceRed LED (650 nm)
Power supply voltage12 to 24 VDC±10% ripple (p-p) 10% max.
Current consumptionEmitter: 10 mA max.
Receiver: 20 mA max.
Control outputNPN open collector
26.4 VDC max.
50 mA max.
Residual voltage: 1 V max. (Load current Less than 10 mA)
Residual voltage: 2 V max. (Load current 10 to 50 mA)
Operation modeDark-ON
Protective circuitOutput short-cut protection, Output reverse polarity protection, Power supply reverse polarity protection
Response timeOperate or reset: 1 ms max.
Ambient illuminanceIncandescent lamp: 5000 lux max., Sunlight: 10000 lux max.
Ambient temperature (Operating)-25 to 55℃ (with no freezing or condensation)
Ambient temperature (Storage)-40 to 70℃ (with no freezing or condensation)
Ambient humidityOperating: 35 to 85% (with no condensation)
Storage: 35 to 95% (with no condensation)
Insulation resistance20 MΩ min. (500 VDC megger)
Dielectric strength1000 VAC 50/60 Hz 1 min
Vibration resistanceDestruction: 10 to 2000 Hz, 1.5 mm or 300 m/s**2 double amplitude for 0.5 hours each in X, Y, and Z directions
Shock resistanceDestruction: 1000 m/s**2 3 times each in X, Y and Z directions
Degree of protectionIEC: IP67
Connection methodPre-wired models (Cable length 2 m)
IndicatorOperation indicator (orange), Stability indicator (green)
WeightPackage: Approx. 40 g
AccessoriesInstruction manual, Set screws for mounting (M2*14), Nuts
MaterialCase: Polybutylene terephthalate (PBT)
Lens: Denatured Polyarylate
Display: Denatured Polyarylate
  • Output circuit diagram

  • Parallel operating range

  • Setting distance

Excess gain ratio vs. setting distance


Ultracompact, Ultrathin Photoelectric Sensor with Built-in Amplifier