The 3pcs Clamp Current Transformer Sensor is designed for precise electricity measuring, featuring a self-locking structure for safety and ease of installation. With a wide inner window of 38MM, it can clamp large cables and bus-bars, making it suitable for various existing installations. This sensor boasts a accuracy class with an accuracy of 0.5, ensuring reliable current measurements. Its isolated plastic case effectively separates external magnetic field interference, providing superior stability. Additionally, it is compatible with various plug types, making it a versatile choice for electrical applications.