The Lot of (10) Geevon 100dB Water Leak Detectors, Model 21601, are high-quality tools designed to detect water leaks in HVAC and refrigeration systems. This new model from Geevon is known for its reliability and accuracy in detecting leaks with a sound level of 100dB, making it easier to locate and repair leaks quickly and efficiently. Ideal for professionals in the HVAC and refrigeration industry, these leak detectors are a valuable addition to any toolbox.