Separate Amplifier Proximity Sensor

ES series

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Amplifier Unit, Expansion Unit, NPN ES-M2

ES-M2 - Amplifier Unit, Expansion Unit, NPN

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

  • CE Marking





One-line expansion system



Operation mode

N.O./N.C. switch-selectable

Timer function

10-ms delay / timer OFF switchable*2




Control output

NPN open collector 100 mA max. 40 V, residual voltage 1 V max.

Disconnection alarm output


Response time

1 ms max.

Temperature characteristics

Within ±8% of detecting distance at +23°C 73.4°F when within 0 to 50°C 32 to 122°F temperature range

Sensitivity adjustment

25-turn trimmer

Protection circuit

Reverse power connection protection, output overcurrent protection, output surge protection


Power voltage

12 to 24 VDC, Ripple (P-P) 10 % or less

Current/power consumption

25 mA max.

Environmental resistance

Ambient temperature

0 to +50 °C 32 to 122 °F*4

Relative humidity

35 to 85 % RH (No condensation)


Approx. 35 g (including nuts and 2-m 9.8' cable)

*1 The ES-M1(P)/M2(P) cannot be connected to the EH-422, 430, 440 or 290.
*2 During N.O. operating configuration, the off delay timer is 10 ms. During N.C., the on delay timer is 10 ms.
*3 Broken connection warning output is not available on the ES-M2 (P).
*4 The ambient temperature changes according to the following conditions when expansion units are added. When adding units, always attach them to a DIN rail (metal plate) and set the output current to 20 mA or less.
1 to 10 expansion units: 0 to 50˚C 32 to 122˚F
11 to 16 expansion units: 0 to 45˚C 32 to 113˚F

Data Sheet (PDF) Other Models