RIDGID SeekTech ST-510 21903 10-Watt Line Transmitter
Apply a tracing signal to buried pipes and cables with clear feedback at every connection.
The RIDGID SeekTech ST-510 is a 10-watt line transmitter for underground utility locating. It applies an active signal to conductive pipes, cables, and tracer wires so their route can be traced with a compatible locator receiver.
An LCD displays circuit resistance and current flow, helping you evaluate the connection and adjust output. Audible feedback provides an additional check before you begin tracing.
Key Features
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Adjustable output up to 10 watts: Match signal output to locating conditions.
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LCD circuit feedback: Check resistance and current flow during setup.
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Audible connection feedback: Helps confirm a suitable tracing circuit.
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Three signal application methods: Direct connection, induction, or an optional inductive clamp.
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Long connection leads: Two 25-foot leads with heavy-duty clips provide flexibility around connection and grounding points.
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Receiver compatibility: Works with compatible utility locators, including the RIDGID SeekTech SR-20 and SR-60, when frequencies match.
Technical Specifications
| Specification | Details |
|---|---|
| Brand / Model | RIDGID SeekTech ST-510 |
| Catalog number / MPN | 21903 |
| Maximum nominal output | 10 W; limited to 1 W above 45 kHz |
| Direct-connect frequencies | 128 Hz, 1 kHz, 8 kHz, 33 kHz, 93 kHz |
| Induction frequencies | 1 kHz, 8 kHz, 33 kHz, 262 kHz |
| Standard power source | Eight D-cell batteries |
| Display | LCD with resistance and current feedback |
| Signal application | Direct connect, induction, optional inductive clamp |
What’s Included
| Item | Quantity |
|---|---|
| SeekTech ST-510 line transmitter — 21903 | 1 |
| Direct-connect leads with clips | 2 |
| Grounding stake | 1 |
| Alkaline D-cell batteries | 8 |
| Operator’s manual | 1 |
Locator receiver and inductive signal clamp are sold separately. Transmitter and receiver frequencies must match. Non-metallic pipes require a suitable tracer wire or another conductive tracing path.
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