The GTC FF300T Transmitter & FF300R Tracer Fault Finder Kit is a diagnostic service tool used for automotive purposes. This kit includes a transmitter and a tracer, both manufactured by GTC. It is designed to help users locate faults in automotive systems with ease and efficiency. The kit is known to work great, making it a reliable tool for diagnosing issues in vehicles. Used Shipped Without The Batteries 2- 9Volts