Haoguo Solenoid Tester, Solenoid Magnet Tool to Detects Ac Fields, and Rotation Tester for Circulating Pumps

WHAT CAN WE DO FOR YOU: You can test the rotation direction of the rotation pump according to the discating direction of our products, DETECTS AC FIELDS: When the indicator is exposed to a strong enough AC magnetic field, the rotation of the disc indicates that there is a communication magnetic field on the point of placing or holding the indicator, MORE FUNCTION: Detects solenoid valves, PORTABLE AND PRACTICAL: Any plumber or heating contractor should have a small, portable and practical tool, GIFT: Our product comes with a key ring tool, you can keep it together with your keys to prevent loss.