Peace, mercy, and blessings of God be upon you. For sale: Digital Insulation Tester (Digital Insulation Tester) From BESANTEK Model BST-IT11 Device specifications and features: Usage: Measuring and testing the insulation strength of cables, equipment, and electrical transformers to ensure safety and prevent electrical leakage. Condition: (Excellent). Accessories: Comes with the original yellow hard plastic case for protection and easy portability. The device is well-known and very reliable for engineers and technicians in the contracting and electrical fields. Location: (Al-Ahsa, Al-Dallow) Price: 550, negotiable within reason.