FD-20 | 512 Hertz DuraSonde Transmitter

The FD-20 is the most popular transmitter in our 512 Hz line for locating in cast iron and nonmetallic lines. And now with its new more durable design the FD-20 is ready to transmit even in the toughest terrain.

Replaces our FV-20 transmitter

• Steel head for durability
• Encased in a strong polycarbonate tube.
• Watertight
• Brass battery cap and 1 AAA alkaline battery included
• Will work with any receiver that uses the 512 Hz frequency. For best results use one of our LineFinders
• Our Spring Carriers are recommended to help protect your transmitter