The RIDGID 15828 In-Line Transmitter is designed for use with SeeSnake Mni Reels. The transmitter allows an operator to use a hand-held locator to pinpoint the location of the camera head in the pipe from above ground. It operates at the industry standard of 512Hz, is extremely durable, requires no batteries for operation, and is flexible enough to not interfere with a camera's ability to go through turns.