Main Category :Commercial, Industrial and Office Equipment Sub Category :Industrial and office equipment Sanath janaka suriarachchi amarasekara This Auto voltage security system monitors and fluctuation range of voltage by detecting the overall standard at domestic or industrial electricity grid with high precision. (Patent no: 15341) This Auto Voltage Security System monitors followings (1) High voltage protection (2) Low voltage protection (3) Earth detection (4) Quick isolator test (5) Live & neutral sequence