20 Channel Extension Box for NEO Messtechnik PV MasterThe Extension Box for NEO Messtechnik PV Master allows simultaneous measurement of 20 IV curves saving hours or days of PV inspection in large solar PV farms. It switches automatically through all connected channels for IV curve measurement and leakage measurement. The kit includes a connection cable to PV Master 10, sensor extension box for temperature and radiation, and exclusive safety test leads.