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Si-Tex 494/50/200-ES Dual Frequency In-Hull Transducer for ES502 Fishfinder

Manufacturer

Si-Tex

<h3>About SI-TEX Marine Electronics</h3><p><strong>SI-TEX Marine Electronics</strong> has been a trusted name on the water for over 50 years, building a reputation among commercial captains, charter operators, sportfishermen, and serious recreational boaters for delivering rugged, reliable, and straightforward marine electronics. Founded in 1975 and headquartered in Riverhead, New York, SI-TEX has remained committed to a single mission throughout its history: provide mariners with the features they actually need, the durability they expect, and the value they appreciate.</p><p>What sets SI-TEX apart from larger, more corporate brands is the depth of experience behind every product. President Ted Bodtmann has been shaping marine electronics since 1967, and the leadership team collectively brings decades of hands-on industry knowledge to product design and customer support. That institutional knowledge translates directly into electronics that work the way seasoned mariners expect them to — straightforwardly, dependably, and without unnecessary complexity.</p><h3>A Full Spectrum of Marine Electronics</h3><p>SI-TEX offers one of the most complete lineups in the marine electronics segment. Their product catalog spans professional-grade <a href="/11288-si-tex-simrad-radars-autopilots-200957">radar systems and autopilots</a>, high-performance echo sounders and CHIRP sonar, precision GPS navigation and chartplotting systems, heading sensors, VHF communications, AIS transponders, and more. Whether you&apos;re outfitting a hardworking commercial vessel, a sportfishing yacht, an inshore skiff, or a long-range cruiser, there is an SI-TEX solution engineered for the task.</p><p>Their SVS Series chartplotter/sounder combos — including the SVS-880 and SVS-760 — are especially popular with commercial fishermen and smaller vessel operators, offering high-resolution color displays, powerful sonar capabilities, and intuitive operation in a compact, rugged package. The NavPro series takes things further, pairing large touchscreen MFDs with built-in Wi-Fi radar compatibility, CHIRP sonar, and Navionics or C-MAP charting integration. For vessel control, the SP-120 autopilot series supports hydraulic, mechanical, and dash-drive steering systems across a range of vessel sizes, and even offers virtual feedback to eliminate the need for a rudder sensor on some installations.</p><p>SI-TEX also offers a comprehensive range of accessories and connectivity hardware — including <a href="/11288-si-tex-diagnostic-scan-tool-cable-18035">cable adapters and interface solutions</a> — designed to keep their electronics integrated and upgradeable as technology evolves. These accessories make it easier to expand an existing SI-TEX system or transition between product generations without starting from scratch.</p><h3>Backed by a 2-Year Warranty and U.S.-Based Support</h3><p>Every SI-TEX product is backed by a <strong>2-Year Warranty</strong> and supported by an experienced service team based in Long Island, New York. For mariners who spend serious time on the water, that combination of product durability and accessible support is not a minor detail — it&apos;s a core reason professionals keep coming back to the brand. SI-TEX also distributes Koden products to the commercial marine market, extending their reach to even more demanding commercial and offshore applications.</p><p>From a single transducer cable to a fully integrated radar, chartplotter, and autopilot system, SI-TEX delivers the tools serious mariners rely on — built tough, priced fairly, and backed by people who know the sea.</p>

Part Number

494/50/200-ES
06/23/2036 4:11 PM
Sale Price

$209.93

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Product Details

The Si-Tex 494/50/200-ES is a dual frequency in-hull transducer designed specifically for use with Si-Tex ES502, EC5F, and EC7F fishfinder/chartplotter models. This through-hull mount transducer provides reliable sonar performance without the need to drill through your boat's hull, making it ideal for fiberglass hulled vessels.

Key Specifications:

  • Dual frequency operation: 50 kHz and 200 kHz for versatile depth sounding
  • Maximum power handling: 500 watts
  • Beam angles: 42° at 50 kHz for wide coverage, 12° at 200 kHz for precise bottom detail
  • Durable plastic housing designed for in-hull installation
  • 30-foot cable with 8-pin connector
  • In-hull mounting eliminates drag and potential damage from underwater obstacles

The 50 kHz frequency provides excellent deep water performance and broad coverage, while the 200 kHz frequency delivers superior detail and resolution in shallower waters. This transducer does not include temperature or speed sensors, focusing purely on depth and fish finding capabilities. Compatible with Si-Tex ES502, EC5F, and EC7F marine electronics.

I called to see if it would ship before I needed it to go on a trip. I gave bad information about my order, but the employee went out of his way to track down my order and made sure that it went out ASAP. Thanks guys!!!<br><br>

Great products, great prices, fast shipping!

Autoplicity must have sent my Airaid CAI within hours of my order because UPS delivered it right away. I even got it before I received an e-mail indicating the order had been processed or a notification of shipping e-mail. <br><br>The online advertised price seems to vary by about $20 and that means that you must monitor the site if you are to get the lower price. However, Autoplicity has arranged with BuySafe to give you the difference if you establish an account with them and go through the process. This process was not easy as there was an apparent database problem where the Autoplicity URL was not taken by BuySafe. A call to BuySafe got that worked out, I am hopeful that I will receive the refund promised via paypal. It looks like a good system if it works.<br><br>The bottom line is that Autoplicity offers the best online price by far and although my unfamiliarity with how they do things caused some confusion on my part, they do have a good order processing and price guarantee in place.

Easy

Thankyou

Easy to use, will definitely return to the site as parts are needed.

Great prices.

Great website, with definitely the lowest prices online. Their system kept me informed every step of the way on my order status. More than the average online store. Autoplicity is now my first stop for auto parts and accessories.

It was good quick and eassy

So far great!

easy ordering

There is a subcategory for the mazdaspeed model of the protege. Much less digging to find the right parts.

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