DC 0‑300V Dual Display Volt Amp Meter Digital Voltage Current Ammeter Gauge Reverse Polarity Protection Item Type: Volt Amp MeterMaterial: ABSParameter: Voltage Range: 300V Test range (v): 0.0-300V, resolution (v): 1V, impedance (Ω) >1M Current Range: 10A Test range (v): +/-0-9.99A, resolution (A): 0.01A Display Mode: 0.28in LED, bicolor (red and blue) Operating Current: <20mA Supply Voltage: Non Isolated Meter: DC3. 5-30V (wide range) Note: The maximum power supply voltage of the non isolated meter should not exceed 30V, otherwise there is a risk of burning.Size: Approx. 48x29x21mm/1.9x1.1x0.8in Mounting Hole: Approx. 45.5x26.5 mm/1.79x1.04in Measurement Accuracy: 1% (±2) Measurement Rate: ≥500mS/time Working Temperature: -10-+50°C Working Air Pressure: 80~106kPa Working Humidity: 10-80% (non-condensing) Sun Exposure: Do not expose directly to the sun