1, low current wiring, high current contactless current sensors are sampled. 

2, four-digit NIXIE tube display. 

3, smart indicator settings, smart led error alarm. 

4,1-3 output control ports.

5, 3X3 keyboard, 9-key operation more convenient.

6, delay start, less load time delay, the overflow delay can be set manually.

7, upper and lower limit values can be set manually. 8, three-phase sampling, sampling more convenient and flexible for individual, customized according to customer needs.