512HZ Strong Signal: This sonde makes your pipeline detection quick and easy. Furthermore, it is capable of working with any 512hz receiver. During operation, the LED will stay steadily lit. If it starts flashing, it indicates a low battery level. 2 Replaceable Connectors: These two adapters can attach the sonde locator to drum machine or sectional cables separately. So they provide versatility in locating underground pipe and line detection. Integrated Seamless Design: The drain locator adopts seamless injection molding process to achieve better shock resistance. Even if accidentally falling from a height, it will not be easily damaged. Waterproof Material: The sewer locator can effectively avoid oxidation, rust, and corrosion to prolong its service life through the abrasion-proof coating. Besides, this waterproof 512 Hz locator can work at optimal temperature -4°F -130°F/-20°C-54°C