The Sonel MZC-340-PV high-current short-circuit loop impedance meter for operating voltages up to 900V AC with measurement category CAT IV 1000 V and efficient ventilation system for smooth and effective operation without downtime. It is only wirelessly controlled. The Sonel MZC-340-PV advanced high current meter is the right choice for professionals in the solar PV (800V), power, electrical, as well as installation and measurement industries. The device combines extensive measuring capabilities with high durability and resistance to harsh working conditions. A specially developed ventilation system translates into greater efficiency and significantly reduces working time.