Includes: 1 - 9V Battery; 1 - Instruction Manual; 1 - Test Lead set === The GDM-300/400 Series Hand Held DMM is a compact, high precision, battery operated multimeter designed to meet most of the daily needs for general engineers as well as service personnel. The GDM-300/400 Series is powered by loads of mobile-oriented features: auto off function to save battery, large backlight display for clear view, rotary range selector and clear-cut push buttons to ease operations, and temperature measurement for outdoor usage. The primary functionalities also match the width of bench-top type: fuse-protected current input, true RMS for accurate AC measurements, Auto ranging, Duty cycle, Relative mode, etc. These compact, reliable, and economical devices are ideal for your toolboxes and pockets.