Trumeter | Innovation by Design
Trumeter | Innovation by Design

HED 261-T panel-mount counter

HED 261 electronic totalising counter

8-digit panel-mount electronic totaliser [24mm X 48mm]

A 24 X 48mm sized, 8 digit totalising counter designed for panel mounting, these minature panel meters are perfect for many OEM applications. They are ideal panel or PCB mounting with contact closure and reed switch signal inputs, the high speed input 10kHz or a slow speed debounced input 30Hz makes these a versatile little unit.

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  • Uses the latest CMOS circuitry to achieve very low quiescent current consumption
  • 8mm black character high contrast LCD display
  • Backlit
  • Counts pulses up to 10kHz frequency
  • External reset input
  • UL and cUL approved
  • For a 4-digit option see the HED 251-T.

PDF Instructions

CE Certificate

REACH, WEEE and RoHS Documentation


Supply Voltage

2.7-3.3 VDC


8 digit black LCD, 8mm characters with leading zero blanking

Count Range


Count Input

High speed input (pin3) 10kHz max positive edge triggered, 0.7V threshold 18V max, 50uS min pulse width
Contact closure open collector input (pin2). 30Hz max, negative edge triggered, 0.7V threshold 18V max, 15mS min pulse width

Reset Input

Negative edge triggered, 0.7V threshold, 15mS minimum pulse length, TTL/CMOS Compatible

Operating Temp

-10°C to +50°C

Storage Temp

-20°C to +70°C

Ordering Information


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