Input power：Single-phase, AC 220 V, 50 Hz/60 Hz Part list: Workbench with independent teaching modules, including power box, body resistance module, body electric shock module, step voltage module, safety ground module, direct electric shock module, indirect electric protection module and insulator monitor module, etc. The device has a power supply detection and indication, shortcircuit current protection, overload protection, ground protection, leakage protection and other functions to guarantee the safety of students. Modul Eksperimen