All-in-one Monitoring: Our Multimeter Combines Voltage, Current, Power, And Energy Testing Into A Single, Portable Device, Suitable For Solar Systems And Rv Use. Safety-first Design: Features An Overload Alarm That Flashes The Backlight And Power Display When Active Power Surpasses A Pre-set Threshold, Ensuring Your System's Integrity. Reliable Data Storage: Automatically Stores Energy Data Even When Power Is Lost, With A Reset Feature Accessible By Pressing The Function Button. Clear Readability: Equipped With A Large-screen Lcd Display That Simultaneously Shows All Vital Information, Complete With A Manual Control Blue Backlight For Optimal Visibility. Easy Application: Compact Size And Comprehensive Functionality Make It Ideal For A Variety Of Uses, Including Industrial Settings, Automotive Maintenance, And Renewable Energy Projects. Discover The Versatility Of Our 4-In-1 Digital Multimeter By Drok. This User-friendly Device Offers Precise Monitoring Capabilities For Dc Voltage, Current, Power, And Accumulated Energy. Designed For Durability And Accuracy, It Features A Built-in Shunt And A Large-screen Lcd Display With A Blue Backlight That Can Be Controlled Manually. Perfect For Solar Installations, Rvs, And More, It Guarantees Reliable Data Storage And Safety Alerts Through Its Overload Alarm Function.