It can be used to measure AC/DC voltage, AC/DC current, resistance, capacitance, diode, continuity testing, frequency, duty cycle, etc. Characterized by stable function and high reliability, with the Features of overload protection and backlight lighted LCD display for clear reading, this product is a perfect tool for lab, factory, radio fans, and family use. Features: LCD display(4000 Counts) with backlight. Automatic polarity identification. Measure AC/DC voltage, AC/DC current, resistance, capacitance, diode, continuity testing, frequency, duty cycle, etc. Over range indication: OL. Low battery indication. Auto power off after 15-minute no-operation. Small size and light weight, suitable for carrying anywhere. With a bracket behind, can stand on your desk in a great position for easy reading. Specifications: Model: RM100 Maximum display: 4000 Operational temperature: 0-40,