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High-Accuracy Digital Contact SensorGT2 series

Amplifier Unit, Panel Mount Type, NPN



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Mounting method

Panel 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

Sampling rate

1,000 times/sec.

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

Response time

hsp (3 ms), 5 ms, 10 ms, 100 ms, 500 ms, 1 s

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

Power supply/I/O cable

12-core connector connection (Connecting cable included)


Approx. 140 g (including panel mounting bracket, protective front cover and 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.

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