VEVOR Rigid Drain Locator Inspection Camera 8/5 in. 1/4-20 in. Connectors with 512HZ Receiver for Detecting Sewer Pipelines

512 Hertz Frequency Sonde. The 512 hz sonde locator transmits a 512 Hz signal that can be picked up with any compatible locator, allowing users to pinpoint the transmitter's position underground. The flashing LED indicates that sonde is transmitting. The maximum detection range of transmitter for underground pipe location is 25 ft. in the air and 15 ft. in cast iron (varies with ambient noise and interference).

• 512 Hz signal can be received by any compatible positioner
• Integrated seamless design for better waterproof shock resistance
• Application for drain cleaning cables or water spray hoses