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Model: 03100285 - Color: Black - Material: Plastic - Features: - Operating voltage:DC 4.5 ~ 30V - Measure voltage: DC 0 ~ 100V - Minimum resolution(V): 0.1V - Measure current:50A (require external shunt) - Minimum resolution(A): 0.1A - Operating current: <20mA - Display: three 0.28" LED digital tube - Display color: Red and Blue (two-color display) - Dimensions: 48 x 29 x 21mm - Mounting cutout: 45.5 x 26.5mm - Refresh rate: about 500mS / times - Measure accuracy: 1% (± 1 digit) - Operating temperature: -10 to 65°c - Operating Humidity: 10 to 80% (non-condensing) - Working pressure: 80 to 106 kPa - Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement - Wiring: - Black line (thin): vacant or buck circuit (module) negative - Red line (thin): power supply+ - Black line (thick): COM common measuring - Red line (thick): PW+ measuring terminal voltage input positive - Yellow line (thick): IN+ current input+ - Notice: - The voltage between the thin red and thin black lines must be within DC 4.5-30V - The ammeter can only be connected to the negative of the device under test - Exceeds 5A long-term full load working continuously it is recommended that the measurement side of the leads are directly soldered to the socket - When the black thin line vacant it is better to use insulating tape around the exposed part of the wire to prevent short circuits - If just be used as a voltmeter it is recommended that the yellow line and the black line were connected together to prevent the ammeter digital flashing - Package include: - 1x Digital Volt Amp Meter - 1x 50A/75mV DC Current Shunt