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1-800-356-4920 (USA) 1-603-471-0158 (Int'l)
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DMO-3xx Series

DMO-3xx Series 3 1/2 digit LED panel meter


  • 3 1/2 digits with 0.56” Red or Green LED 
  • Window mount with optional bezel 
  • User-selectable decimal points





Display:  Digits: 3 ½ digits (±1999 count)
  Type:  7-segment LED (red or green)
  Digit Height:  .56in (14.2mm)
  Polarity Indication:  Automatic “-” for neg input
  Decimal Point:  3 position selectable
  Overrange: three lower order digits blank for inputs >1999 & < -1999
Signal Inputs: Configuration: bipolar, differential 
  Full-Scale Input: ±200mV, ±2V, ±20V 
  Input Offset Adjustment:  auto zero
  Input Impedance:  >100MΩ (±200mV) 
‑1MΩ (other ranges)
  Common Mode Range: ±1 VDC
  Common Mode Rejection: >86dB
  Protection:  ±350VDC (±100 VDC for 200mV range)
  Input Bias Current:  1pA typical, 100pA max
  Control Inputs: decimal point select, span adjust trimpot
Performance: Sampling Rate: 3.3 readings/s
  Accuracy: ±(0.1% + 2 counts) typical ±(0.2% + 2 counts) max
  Warmup, typical: 10 min
  Temperature Drift, typical:  100 ppm/°C 
Power Supply: Supply Voltage:  +5VDC ±5%
  Supply Current, typical: 200mA
Environmental: Operating Temperature:  0-50°C
  Storage Temperature:  -10 to 60°C
  Relative Humidity: 0-95% (non-condensing)
Mounting:   Window mount (optional bezel) 
Dimensions:   2.52 x 1.10 x .73
Panel Cutout :   2.05 x .81
Weight:   0.7oz (20g)
Physical: Package Style:  window mount
  Dimensions:  2.52 x 1.10 x .73
  Panel Cutout:  2.05 x .81
  Weight:  0.7 oz (20 g)
  Connector:  J1C-10 or C10-5 optional
  Connection: 10 pin
  Bezel:  optional