Brand N/A Model 03100293 Quantity 1 Color Black Material Plastic Specification Operating voltage:DC 4.5 ~ 30V Measure voltage: DC 0 ~ 100V Minimum resolution(V): 0.1V Measure current:100A (require external shunt) Minimum resolution(A): 0.1A Operating current: Features 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+; Application 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. English Manual/Spec YES Packing List 1 x Digital Volt Amp Meter 1 x 100A/75mV DC Current Shunt