LCD Display Electronic Preset Counter

RC series

Catalogues View Catalogue

72-mm□ 5-digit 7-segment LED, One-stage Preset, AC Power Supply RC2-21K




Operation method

Addition, subtraction, addition and subtraction

Operation mode

Overcount, auto-reset, rotary, comparator

Return method

Manual, External, Automatic (auto-reset)

Display power

7-segment LED (character height: 14 mm)

Number of digits

5 (with zero-suppress function) -9999 to 99999*1

Prescale function


1 pulse → 1 to 99 counts


1 to 99999 pulses → 1 count

Power off memory time

Lithium battery (service life: Approx 10 years at 20°C)



Individual, command, phase differential

Mounting method

Flush (panel) mounting

External calibration input signal


Non-voltage input (contact or solid-state) (Count input, inhibit input, reset input)

Highest counting speed

Contact input: 50 c/s.
Solid-state: 500 c/s, 5 kc/s, 50 kc/s selectable (ON/OFF ratio=1:1)

Control output

One-shot output time

0.01 s to 9.99 s (variable)


Contact: 13 ms (50 c/s mode)
4 ms (500 c/s mode)
4 ms (5 kc/s mode)
4 ms (50 kc/s mode)

DC output

12 VDC ± 10%, 100 mA maximum


Power voltage

100 to 240 VAC ±10 %, 50/60 Hz

Power consumption

12VA or less

Environmental resistance

Insulation resistance

100 MΩ min. at 500 VDC megger (across terminal and housing)

Noise resistance

Square-wave noise by noise simulator: 1 kV p-p, 1 µs (across power terminals)

Environmental resistance

Ambient temperature

0 to +50 °C

Relative humidity

35 to 85 % RH (No condensation)

Withstand voltage

500 VAC, for 1 minute (across external AC terminal)


Approx. 320 g

*1 Display uses the zero suppression method.

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