--- product_id: 18150317 title: "RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts" brand: "ridgid" price: "₨913204" currency: LKR in_stock: true category: "Ridgid" url: https://www.desertcart.lk/products/18150317-ridgid-21898-seektech-st-305-line-transmitter-underground-wire-locator store_origin: LK region: Sri Lanka --- # 5 Watts max power output 4 selectable frequency options 3 versatile connection methods RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts **Brand:** ridgid **Price:** ₨913204 **Availability:** ✅ In Stock ## Summary > ⚡ Trace with confidence, locate like a pro! ## Quick Answers - **What is this?** RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts by ridgid - **How much does it cost?** ₨913204 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/18150317-ridgid-21898-seektech-st-305-line-transmitter-underground-wire-locator) ## Best For - ridgid enthusiasts ## Why This Product - Trusted ridgid brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Portable Pro:** Lightweight, battery-powered with extendable strap and ground rod for effortless fieldwork. - • **User-Centric Design:** LED-lit buttons and audio feedback guarantee you’re ready before you start tracing. - • **Precision Powerhouse:** Up to 5 watts of power ensures pinpoint line tracing with minimal interference. - • **Connection Confidence:** Supports direct, surface induction, and clamp induction connections for any job site. - • **Frequency Flexibility:** Choose from 4 frequencies or transmit 2 simultaneously for unmatched versatility. ## Overview The RIDGID 21898 SeekTech ST-305 is a compact, battery-powered line transmitter delivering up to 5 watts of power with 4 selectable frequencies and 3 connection methods. Designed for precision underground cable locating, it features LED-lit controls and audio feedback for user-friendly operation, making it an essential tool for professionals demanding accuracy and portability in the field. ## Description Product Description Master your jobs with ease and accuracy with the RIDGID SeekTech ST-305 Line Transmitter (catalog number 21898). This advanced transmitter energizes metallic lines to provide highly accurate results and supports simultaneous transmission of two frequencies, enhancing versatility and precision. It delivers up to 5 watts of power and offers four selectable frequency options, ensuring effective line tracing with significantly reduced interference. Designed with user convenience in mind, the ST-305 features LED-lit buttons and intuitive audio feedback that verify circuit functionality before you begin tracing, making the operation straightforward and reliable. Our underground utility locator supports three connection methods—direct connection, surface induction connection, and induction connection via the separately sold SeekTech Inductive Signal Clamp—allowing for flexibility in various field scenarios. The transmitter's compact, battery-operated design includes an extendable carrying strap and a conductive ground rod, ensuring both portability and ease of use. This combination of features makes the RIDGID SeekTech ST-305 an ideal choice for professionals needing an efficient, reliable tool for underground utility work. RIDGID is a global manufacturer trusted by the skilled trades in more than 100 countries. BUILT FOR THOSE WHO KNOW. From the Manufacturer Since 1923, RIDGID has remained the symbol of certainty to dedicated professionals of the expert trades. Every tool that bears the RIDGID brand is engineered to the same high standards of quality, strength, and endurance, as was that first heavy-duty pipe wrench more than 80 years ago. Ridgid covers its products with a lifetime warranty against defects in material or workmanship for the life of the tool. The Ridgid 21898 Line Transmitter has 4 direct connect frequencies, 3 inductive frequencies and can simultaneously transmit 2 line frequencies. This transmitter has an automatic impendence matching system and has a maximum power output of 5 watts. Also it comes with variable power settings, low, medium and high. ## Features - LINE TRACING TRANSMITTER: Energizes metallic lines for highly accurate line tracing and underground cable locating; simultaneously transmit two frequencies for enhanced versatility and precision - POWERFUL AND COMPACT: Delivers up to 5 watts of power and features 4 selectable frequency options, ensuring precise line tracing and underground locating with significantly reduced interference - USER-FRIENDLY OPERATION: Equipped with LED-lit buttons and intuitive audio feedback that confirm the circuit is functioning properly before you start tracing, making the process straightforward - VERSATILE CONNECTIONS: Supports 3 different connection methods: direct connection, surface induction connection, and induction connection using the separately sold SeekTech Inductive Signal Clamp - LIGHTWEIGHT AND EASY TO CARRY: The compact, battery-operated transmitter includes an extendable carrying strap and a conductive ground rod, offering both portability and convenience for fieldwork ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001NGPKKU | | Best Sellers Rank | #180,244 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Fiber Optic Transmitters | | Brand Name | RIDGID | | Color | Yellow | | Customer Reviews | 4.6 4.6 out of 5 stars (84) | | Global Trade Identification Number | 00095691218988 | | Included Components | Battery | | Item Type Name | RIDGID 21898 SeekTech ST-305 5-Watt Line Transmitter and Underground Cable Locator, Yellow/Black | | Item Weight | 2.4 pounds | | Manufacturer | Ridgid Tool Company | | Model | 21898 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 21898 | | Power Source | Battery Powered | | Style Name | SeekTech | | UPC | 094704237961 095691218988 | | Unit Count | 1 Count | | Warranty Description | Full lifetime warranty | ## Product Details - **Brand:** RIDGID - **Color:** Yellow - **Item Weight:** 2.4 pounds - **Power Source:** Battery Powered - **Style:** SeekTech ## Images ![RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts - Image 1](https://m.media-amazon.com/images/I/51ku25+PzWL.jpg) ![RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts - Image 2](https://m.media-amazon.com/images/I/41j-wpHhGRL.jpg) ![RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts - Image 3](https://m.media-amazon.com/images/I/41NcguhGDTL.jpg) ![RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts - Image 4](https://m.media-amazon.com/images/I/41ybXKha5QL.jpg) ![RIDGID 21898 SeekTech ST-305 Line Transmitter, Underground Wire Locator and Tracer, 4 Frequency Options, 3 Connection Methods, 5 Watts - Image 5](https://m.media-amazon.com/images/I/619gvruGbiL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Can this be used with the seesnake ca12x** A: It’s not a detector. This is the brick that charges metal lines or materials. The see snake has its own transmitter. **Q: Could I use this tool to trace underground electrical circuits through conduit?** A: Yes! This is exactly what it is designed to do. The depth of detection is dependent on the distance from the transmitter source, saturation, composition of the soil and the type of conduit, etc. Good luck! **Q: I need a locator to find pvc waterlines indoor and outdoor. Will this work?** A: You can but need to open the line and run a fish tape and connect to the fish tape to light the line **Q: Will it give approximate depth** A: The Ridgid 21898 is a transmitter, you will need to use any of Ridgid’s locator to have a reading of line or pipe depth. There are 4 locator models depending on your needs, SR-20, SR-24, SR-60 and NaviTrack Scout. Sincerely America Tools ## Frequently Bought Together - RIDGID 21898 SeekTech ST-305 Line Transmitter, Line Tracer and Underground Line Locator,Yellow,Small - RIDGID 21893 SeekTech SR-20 Locator, Line Tracer and Underground Utility Locator, Yellow, Small - Ridgid 19238 Navitrack Scout Locator, Underground Pipe Locator And Cable Location Device Small --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.lk/products/18150317-ridgid-21898-seektech-st-305-line-transmitter-underground-wire-locator](https://www.desertcart.lk/products/18150317-ridgid-21898-seektech-st-305-line-transmitter-underground-wire-locator) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-09-04*