Ampere - Digital Measuring Instrument PCE-DC1 Mini - Ampere Meter for AC Current, AC Voltage, DC Current, and Frequency (3 in 1) / Clamp Opening Max. 18 mm. This ammeter has been designed for the indirect measurement of AC/DC currents as well as frequency. A non-contact voltage tester function and a flashlight for illuminating the measurement area have also been integrated into this ammeter. The compact dimensions of this amp clamp allow for use in hard-to-reach places. The large illuminated display of the amp measuring instrument ensures excellent readability even in dark environments, such as in control cabinets and cable ducts. The non-contact voltage tester function not only helps you detect dangerous potentials but also provides you with an accurate tool for locating cable break positions.