The Ridgid ST-33Q+ Line Transmitter with Bluetooth (26168) is ideal for inducing current onto a target line. It will also direct connect using any frequency from 10Hz to 490kHz* with power up to 10 Watts. The ST-33Q+ also allows the flexibility of using D-Cell alkaline batteries or 18V rechargeable Ridgid batteries for minimal interruptions on the job. The new Bluetooth feature on the ST-33Q+ allows you to finish complex locates faster by using wireless changing of the transmitted frequency from the SR-24 receiver from up to 200 yards away.).