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          7. 48-mm□ 4-digit 7-segment LED, One-stage Preset, DC Power Supply

          LED TimerRT series

          48-mm□ 4-digit 7-segment LED, One-stage Preset, DC Power Supply



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          DC type

          Operation method

          Addition, subtraction, addition and subtraction

          Operation mode

          On delay 1, on delay 2, power on delay, off delay, flicker, interval, integration

          Return method

          Power reset, external reset, manual reset, automatic reset (excluding on delay 1, power on delay, and integration modes)

          Display power

          7-segment LED (character height: 12 mm)

          Number of digits


          Time range

          0.001 s to 9.999 s, 0.01 s to 99.99 s, 0.1 s to 999.9 s, 1 s to 9,999 s, 1 s to 99 m 59 s, 0.1 m to 999.99 m, 1 m to 9,999 m, 1 m to 99 h 59 m, 0.1 h to 999.9 h, 1 h to 9,999 h

          Power off memory time

          Approx. 10 years (at 20°C 68°F)

          Mounting method

          Panel mount (embedding), surface mount, DIN rail mount*1

          Timer accuracy

          ±0.01%, ±1 digit (in regards to the time-up value)

          External calibration input signal

          Response time

          1 ms, 20 ms (switchable by way of a switch)


          No-voltage input (with contacts, without contacts [IN input, RESET input])

          Power supply reset

          Minimum power opening time: 500 ms

          One-shot time

          0.01 s to 1 s (trimmer variable)

          Control output

          Output without contacts: maximum NPN open-collector output: 100 mA (40 V or less)

          DC output

          12 VDC ± 10%, 50 mA maximum


          Power voltage

          12 to 24 VDC ±10 %

          Power consumption

          150 mA or less

          Environmental resistance

          Insulation resistance

          100 MΩ or more (tested with a 500 VDC megger) between all the external terminals and the case

          Noise resistance

          Square wave noise generated by a noise simulator, between the power supply terminals, ±2 kV for 1 µs

          Environmental resistance

          Ambient temperature

          -10 to +50 °C 14 to 122 °F (No freezing)

          Relative humidity

          35 to 85 % RH (No condensation)

          Withstand voltage

          1,000 VAC for 1 minute (between all the external terminals and the case)

          Vibration resistance

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

          Shock resistance

          100 m/s2, 3 times in each of the X, Y, and Z directions


          Approx. 110 g

          *1 Use an optional attachment (OP-91867) to perform surface or DIN rail mounting.

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