Current transformer value is fixed based on 100/5A. The device shows the current drawn by the load on the 1st display (20 mm large). It shows the high current set value on the 2nd display (14 mm small). You can adjust the high voltage set value by pressing Up and Down buttons.  

.0.1A - 5.5A  

User Manual:

Dongfeng Industrial Zone Yueqing, Zhejiang, 325604, P.R.China
Phone: +86-577-57171337 Fax: +86-577-57171336