Main Features:<br />● Operating voltage: DC 4.5 - 30V<br />● Measure voltage: DC 0 - 100V<br />● Minimum resolution(V): 0.1V<br />● Measure current: 50A (require external shunt)<br />● Minimum resolution(A): 0.1A<br />● Operating current: Less than 20mA<br />● Display: Three 0.28 inch LED digital tube<br />● Display color: Red and blue <br />● Dimensions: 48 x 29 x 21mm<br />● Mounting cutout: 45.5 x 26.5mm<br />● Refresh rate: About 500ms / times<br />● Measure accuracy: 1 percent (± 1 digit)<br />● Operating temperature: -10 to 65 centigrade degree <br />● Operating humidity: 10 to 80 percent (non-condensing)<br />● Working pressure: 80 to 106 kPa<br />● Black line (thin): Vacant or buck circuit (module) negative<br />● Red line (thin): Power supply +<br />● Black line (thick): COM， common measuring<br />● Red line (thick): PW +， measuring terminal voltage input positive<br />● Yellow line (thick): IN +， current input +<br />● Suitable for automotive / electric cars / motorcycles battery monitoring or other products voltage current measurement<br /><br />    Specifications<br />General<br />	 Material: Plastic                                                	<br />Weight and Size<br />	 Product Weight: 0.074 kg                                                  <br />                        Package Weight: 0.10 kg                                                  <br />                        Product Size(L x W x H): 4.8 x 2.9 x 2.1 cm / 1.9 x 1.1 x 0.8 inches                                                  <br />                        Package Size(L x W x H): 12.0 x 8.0 x 3.0 cm                                                	<br />Package Contents<br />	 Package Contents: 1 x 0.28 inch 3 Digit Red Blue LED Display Voltmeter Current Meter， 1 x DC Current Shunt                                                	<br /><br /><br /><br />                                                                                            <br />