This digital clamp meter is designed to measure voltage, current and resistance across AC and DC circuits. It can also measure capacitance, frequency, diode, continuity, temperature and carry out non-contact voltage sensing. The device features an easy-to-read LCD display. There is a convenient backlight that will switch off automatically after 30 seconds. To help conserve battery life, the device will also automatically shut down and enter sleep mode after 15 minutes of inactivity. The meter is powered by 4 x AAA batteries (available separately).