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Two small rectangular meters with .28 inch blue and red LED displays and attached wires

Digital Voltmeter Ammeter DC 100V 10A 0.28" Blue Red Dual LED 2pcs

SKU CH-AYR7-MEBE3

Pair of dual-colour DC meters measuring 0–100 V and 0–10 A with 0.1 V and 0.01 A resolution on 0.28″ displays

  • Sports TeamNO
  • Measures up to 100V DC with 0.1V resolution
  • Tracks current up to 10A with 0.01A precision
  • Blue and red dual-colour 0.28" LED display for clear reading
  • Operates from 4 to 30V supply with under 20mA draw
  • Compact 48 by 29 by 21mm panel fits tight spaces

Compact Dual-Display Meter for DC Monitoring

This two-piece set provides 0.28 inch blue and red LED panels that show voltage and current simultaneously. Each unit operates from a separate DC 4 to 30 V supply while measuring up to 100 V and 10 A. The 1 % accuracy and 0.1 V or 0.01 A resolution suit hobbyist and light-industrial testing.

Suitable for Low-Voltage DC Panels.

Builders adding instrumentation to battery chargers, solar controllers or bench supplies will find the dual-colour readout clear at a glance. The 30 V supply limit and 10 A shunt rating rule out mains-voltage circuits, automotive cranking tests or any load exceeding ten amps.

Critical Limit: Meter Supply Must Stay Below 30 V

Although the voltage channel reads to 100 V, the module itself is powered from the measured circuit and will burn out if its own supply exceeds 30 V. Wiring must therefore isolate the meter’s operating rails from higher-voltage sources.

Highlights

  • Measures up to 100V DC with 0.1V resolution
  • Tracks current up to 10A with 0.01A precision
  • Blue and red dual-colour 0.28" LED display for clear reading
  • Operates from 4 to 30V supply with under 20mA draw
  • Compact 48 by 29 by 21mm panel fits tight spaces

Specifications

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Questions about this item

Two meters are included — when would I use both at once?

You can monitor voltage on one circuit and current on another, or watch input and output rails of the same supply simultaneously.

The headline says 100V 10A, but the meter itself only takes 30V — how does that work in practice?

The 100V range is for the thin sense wires that measure the circuit under test; the thick power wires that run the display must stay below 30V.

The display refreshes roughly every 300mS — what does that mean for watching a fluctuating load?

Readings update about three times per second, so you will see step changes clearly but very fast transients may be averaged out.

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