The SeekTech SR-20 Locator is a lightweight yet rugged receiver that provides all the information needed for faster, more accurate locates. Target line and guidance arrows quickly identify distortion. Trace any frequency from 10 Hz to 35 kHz.
| 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. |
| Weight | 3.5 lbs. (1.6 kg). |
| Meets FCC Class A and EN 55022 Class A requirements. | |
| * 30 user definable frequencies can be set from 10 Hz to 35 kHz. |
The SR-20 is a lightweight, rugged utility line locator with omnidirectional and gradient antennas that trace frequencies from 10 Hz to 35 kHz, providing continuous depth and intuitive mapping for underground cables and pipes. It operates in active line trace, passive line trace (including OmniSeek), and sonde modes.
Typical SR-20 specs include length 11.2 in (285 mm), width 4.3 in (109 mm), height 31.1 in (790 mm), weight 3.3 lb (1.5 kg) without batteries, powered by four size C batteries — alkaline or rechargeable NiMH/Ni-Cad — with operating temperature from -4°F to 122°F (-20°C to 50°C) and storage temperature from -4°F to 140°F (-20°C to 60°C).
The monochrome LCD (240 × 160) shows tracing line, guidance arrows, proximity number, signal strength, measured depth, and distortion indicators for a clear locating experience. It offers continuous depth and informational locating cues to confirm accuracy.
Insert four C batteries into the compartment, ensure full contact, unfold and lock the antenna mast, and power on. Battery life varies with use; replace when the low-battery warning appears. Keep the mast vertical during operation.
Use the Main Menu to select Checked-Active frequencies and cycle with the Frequency key. Choose Line Trace for active or passive locating and Sonde mode for transmitter locating. OmniSeek passively scans <4 kHz, 4–15 kHz, and >15 kHz simultaneously to find the strongest source.
