Yeeco Multifunction Digital LCD Multimeter DC 0-100V 0-30A Wireless Voltmeter Ammeter Watt Meter Capacity Tester Electricity Meter Coulomb Meter With multi functionality, can real-time detection of voltage, current, power, capacity, watts, time etc; the measure voltage range: DC0-100V/ ampere range: 0-30A/ power range: 0-200KW/ capacity range: 0%-100%/ watt range: 0-400KWh/ time range: 0-99 days Wireless color LCD display, free to set the brightness, can clearly see the data even in the strong light With built-in relay which can achieve the over-current protection, overvoltage protection, undervoltage protection, and limited protection and other protection Support the capacity value by custom settings, used in the battery charging and discharge, can be real-time monitoring of the discharge of power and charge into the power; can monitor the battery capacity in real time. very suitable for monitoring the output voltage and current, and the battery charging and discharge monitoring application occasions With the strong practicality and wide application; with different installation ways, can wireless communication or wired connection