Comprehensive Testing Capability: This tool is essential for testing the rotational direction of circulating pumps. By observing the direction indicated by our product, users can easily determine the correct setup for efficient operation, ensuring your system's optimal performance. Advanced AC Field Detection: Equipped with sensitive detection capabilities, this tester identifies AC magnetic fields effectively. When the indicator is near a strong AC field, the rotation of the disc confirms the presence of a magnetic field, crucial for troubleshooting electrical installations. Versatile Functionality: Beyond its primary use, this tool also detects solenoid valves, making it a valuable addition to any toolkit. Its ability to handle multiple functions makes it a must-have for professionals in plumbing, heating, and electrical industries. Portable Design for Professionals: Designed with the needs of plumbers and heating contractors in mind, this compact, tool is easy to carry and use in settings. Its practicality ensures that you have the right tool at hand when needed. Color: Black Material: plastic Package Contents: 1 * Solenoid Valve Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.