High-Accuracy Digital Contact Sensor

GT2 series

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Amplifier Unit, DIN Rail Type, NPN GT2-72N

GT2-72N - Amplifier Unit, DIN Rail Type, NPN

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

Data Sheet (PDF)


CAD Data

360°view (3D PDF)


  • CE Marking
  • UL Recognition(c/us)




Mounting method

DIN-rail mount


NPN output

Main unit/expansion unit

Expansion unit*1

Power supply voltage

10 to 30 VDC, including 10 % ripple (P-P), Class 2*1

Power consumption


2,200 mW max. (30 V, 73.3 mA max.)

Power saving (Eco)

1,700 mW max. (30 V, 56.7 mA max.)

Display power

Measured value display

6 + 1/2-digit 7-segment LED (red)

Other displays

2-color, 13-level bar LED display (red, green), indicators (red, green)

Display range

-199.999.9 to 199.999.9

Display resolution

0.1 μm 0.004 Mil

Control input

reset/bank input

No-voltage input

Control output


NPN open collector, 40 V 50 mA or less, residual voltage 1 V or less*1*2

Analog output


Response time

hsp(3)/5/10/100/500/1,000 ms
(When using GT2-Pxxx, hsp(12)/20/40/400/2,000/4,000 ms)

Environmental resistance

Ambient temperature

-10 to +50 °C 14 to 122 °F (GT2-71MCN/71MCP: -10 to +45 °C 14 to 113 °F when expansion unit (s) is connected)

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions


Main body case: Polycarbonate, Key top: Polyacetal, Front sheet: PET, Cable: PVC


Approx. 140 g (including power cable)

*1 When adding expansion units, there are the following restrictions according to the number of connected units.
[When 2 to 8 units are connected including the main unit]
Power supply voltage: 20 to 30 VDC
Control output current: 20 mA or less
(GT2-71MCN(P) only) Ambient temperature: -10 to 45°C 14 to 113°F
[When 9 to 15 units are connected including the main unit]
Power supply voltage: 20 to 30 VDC
Control output current: 10 mA or less (including the DL-RB1A output current)
Residual voltage: 1.5 V or lower
(GT2-71MCN(P) only) Ambient temperature: -10 to 45 °C 14 to 113 °F
*2 The GT2-71MCN(P) does not have HH/LL.

Data Sheet (PDF) Other Models