381 Synergy Series Digital Weight Indicator

The 381 Synergy Series digital weight indicator is designed to provide reliable operation of straightforward weighing systems, including material handling and warehouse scales. The LCD weight display is clearly visible to operators, allowing the 381 Synergy to be mounted almost anywhere. A five-button keypad simplifies operation, and RS-232 and USB ports provide connection to peripheral equipment.

Reliable Battery-backed Performance

The 381 Synergy has an ABS plastic enclosure with two different battery options, enabling you to create the ideal portable weighing solution for your operations. The AA battery-operated model provides up to 40 hours of operation and has an IP54 rating. The Nickel Metal Hydride (NiMH) battery-operated model provides up to 80 hours of operation with an IP66 rating. Both battery versions have an optional external power adapter.

  • LCD display
  • Battery powered
  • Push-button and keyed tare
  • Two communication ports
  • Five tactile buttons
  • Configurable print formats
  • ABS enclosure


Batteries: AA or nickel metal hydride (NiMH)
Optional: 115/230VAC to 12VDC adapterPower Consumption:
6 W max with optional external power adapter

Battery Life:
AA: 40 hours with 1 × 350 ohm load cell
NiMH: 80 hours with 1 × 350 ohm load cell

Excitation Voltage:
5 VDC, 8 × 350 ohm or 16 × 700 ohm load cells

Analog Signal Input Range:
-0.3 mV to +30 mV
common mode voltage 0.7V to 3.3V

Analog Signal Sensitivity:
1 µV/graduation recommended

A/D Sample Rate:
5, 6, 10, 12, 20, 25, 40, 50, 80, 100Hz, software selectableResolution:
Internal: 8,000,000 counts
Display: 100,000

System Linearity:
Within 0.01% full scale

Communication Ports:
One RS-232 (three-wire)
One USB 2.0

g, lb, t, tn, kg, oz, battery level, PT, LT, gross, zero, unstable, net

Six 1 in (25 mm) tall, LCD digits

5 tactile buttons

(L × W × H)
8.50 × 3.17 × 5.06 in
(215.8 × 80.5 × 128.5 mm)Temperature Range:
Certified: 14 °F to 104 °F (-10 °C to 40 °C)
Operating: 14 °F to 122 °F (-10 °C to 50 °C)

AA Battery: IP54, ABS
NiMH Battery: IP66, ABS

Two-year limited

EMC Immunity:
10 V/m

NTEP CC 21-051 Class III/IIIL, 10,000 d
Measurement Canada AM-6184


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