Active 400 Mm Transformer Oil Level Alert boasts of an attractive appearance as well as transparent sight tube. It has advanced features and has the range for both Celsius and Fahrenheit. This is accessible with simple and rugged construction. It is available in several sizes and has easy mounting. Active 400 Mm Transformer Oil Level Alert is designed to offer the warning about the level of oil. in This is essential for good functioning of transformers used in the power substation. These function as the appropriate protection equipment that can be simply installed to ensure protection against several faults.