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SeekTech SR-20 Locator

The 5 watt SeekTech ST-305 Line Transmitter lets you energize metallic lines for tracing. Download Brochure

Additional information



Active Line Trace Frequencies

128 Hz, 1 kHz, 8 kHz and 33 kHz.

Passive Power Trace

50 Hz, 60 Hz, <4 kHz Broadband

Passive Radio Trace

4 kHz-15 kHz, 15 kHz-36 kHz

Sonde Frequencies

16 Hz, 512 Hz, 640 Hz, 850 Hz, 8 kHz, 16 kHz, 33 kHz

Power Source

4 C-Cell batteries (included) or Rechargeable RIDGID® Professional 18V battery with RIDGID SeekTech® 18V Adaptor (optional)

Battery Life

Varies with battery rating, use and operating factors. Four size C, alkaline batteries provide approximately 10 to 15 hours. RIDGID® Professional 18V battery provides approximately 18 to 22 hours


3.5 lbs