HTN wide viewing angle liquid crystal screen, clearly distinguishable. Green backlight, high contrast. It has the reverse indication of voltage, current, power, energy consumption, current and energy consumption. The voltmeter is simple to install, embedded installation, minimalist wiring. Digital display voltmeter is an industrial design and integrated builtin shunt.DC Tester uses reinforced PBT material, high temperature resistance, . Backlit Control:short the button to turn on or off the backlight Specification: Item Type:Digital Display Voltmeter Specification:300A Measuring Voltage:DC0-300V Producr Size:.85.3x44x32mm / 3.4x1.7x1.3in Energy Consumption Reset:long the button for more than 3 seconds to reset energy consumption Current Indication:the current has a direction indication,the "-" sign indicates the reverse direction,otherwise it means the forward direction Energy Consumption Indication:energy consumption has direction indication,"-" sign indicates reverse direction,otherwise it means forward direction The direction of energy consumption accumulation is judged according to the direction of the current,the current is positive,the energy consumption increases,the maximum is 999KWH,and the overflow is maintained,unless manually cleared; the current is reversed,the energy consumption decreases,the maximum is -999KWH,and the overflow is maintained,unless manually cleared. Way of Working: Direct Power Supply:direct power supply for test voltage,measuring range:8-300V Power Supply:working voltage range:DC5-12V,measuring range:0-300V Data Saving:energy consumption and backlight status can be saved when power off Colour:As Shown Material:PBT Due to different batches,there may be differences in product appearance and printed text,which not affect use Package Contents: 1 * Digital Display Voltmeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.