01. Adapts energy-rich voltage dependent resistor, nanosecond level speed of response;
02. Capacity of over-heated and surge protection;
03. Visual display on protector and remote signal terminal:
a. Visual display on protector about operate;
b. Terminal effecting long-distance monitor operate of protector, outside connecting lines needed;
c. Convenient to be pulled or inserted, possible to remove failed module;
d. DIN rail 35mm installation.