This Zotek ZT111 digital multimeter is designed to offer users better performance and higher safety rating. 550 volts over-load protection and unique structural design develop its modern type of multi-meter with intense performance/price ratio and the most suitable choice for the laboratory, factories, and radio enthusiasts. Product features a 9999 Counts multi-function can display 9999 counts and measure AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode, Continuity Testing, NCV and Temperature. Portable design with a back bracket for supporting multi-meter and can collect test probe for your convenience. With large LCD back-light display, convenient to use and able to read in a negative environment. Auto power function off 15 minutes after the rotary switch is opened. The multimeter will automatically enter a sleep state to reduce energy consumption.