Kinstecks Motorcycle Voltmeter DC 12V Digital Gauge LED Display Voltage Meter for Car Battery Monitor Blue

【DC 12V Motorcycle Voltmeter】LED Display, It is Perfect to Monitor the Condition of the Battery, You can Use It on Your Motorcycle, Car, Trailer, etc 【New Startup Mode Design】LED Display Occurs Self-test When Starting up, Similar to the Style of Car Instrument Startup 【Battery Voltage Monitor】The Voltmeter will Flash Constantly When the Voltage is Lower than 11.5V or Higher then 19.8V 【Size of Voltmeter】Dimention: 5.5x2.8x1cm(2.1x1.1x0.3in), Cable Length: 97cm/38.1in 【Easy to Install】Only Two Wires, The Red Connects to Positive and Black Connects to Negative