●LED Voltmeter, which shows the current battery voltage. Input voltage: 12-24 (V). Output voltage: 5 (V) ●LED Ammeter, can be connected to any electrical equipment above. Output current : 2100 (mA) ●This LED digital voltmeter ammeter can be detected at any time under voltage conditions to avoid accidents ●Concerned about the use of the electric current situation at any time ●This amp volt meter guage is made of high quality ABS material, high temperature resistance, safe and , long service life