Garmin Airmar R111LH In-Hull/Pocket Mount Transducer, 2kW, CHIRP Low 38-75 kHz, CHIRP High 130-210 kHz, Bare Wire, Depth/Temperature

Overview

The Garmin 010-11643-20 is a 2 kW in-hull or pocket-mounted CHIRP transducer (Airmar R111LH) for depth and temperature on compatible Garmin sonar systems. It runs CHIRP Low (38-75 kHz) and CHIRP High (130-210 kHz) and is rated for depths up to 6,000 ft.

It is typically installed inside the hull, which keeps the bottom free of a protruding thru-hull fitting and protects the element from trailering, lifts, and floating debris. The beam is wide enough on the low band for tracking bottom in deeper water and tightens up on the high band for cleaner detail and target separation.

Key features

• 2 kW dual-band CHIRP: 38-75 kHz (low) and 130-210 kHz (high)
• Rated maximum depth up to 6,000 ft
• Beamwidth: 10° x 19° on low band, 4° to 8° on high band
• Supports traditional and Spread Spectrum scanning
• In-hull installation supports 0° to 25° deadrise; pocket mount is installation dependent
• Bare-wire termination for direct connection to compatible sonar modules
• 49 ft cable for routing from bilge to helm electronics

Installation and setup

In-hull mounting works best on a solid fiberglass section of hull and is not recommended for cored-hull vessels. The mounting location matters more than most people expect: use a spot that stays in clean water at speed and is not aerated by strakes, steps, intakes, or the prop wash.

Because this is a 2 kW transducer, the physical install and cable routing usually take some planning. Leave room to service the tank area later, and keep the cable run away from high-current wiring where possible.

Compatibility and sonar integration

This transducer is meant for sonar setups that support 2 kW power and CHIRP Low/High operation. It feeds depth and temperature data through your sonar module and can be part of a Garmin Marine Network installation, including systems that use modules such as the GSD 26.

Since the lead is bare wire, confirm the exact termination your sonar module expects before installation. If your system uses an adapter or junction point, plan that into the cable run so the connection is protected and accessible.

Use cases on board

This setup is a common fit for boats that spend time offshore and want strong deep-water bottom tracking without putting a large thru-hull assembly in the running surface. It also suits owners who trailer regularly or keep the boat on a lift and prefer an in-hull solution that stays protected.

Maintenance and care

With the element inside the hull, there is very little external maintenance. Periodically check the mounting area for any signs of movement, keep the bilge space around the install clean, and inspect the cable along its run for chafe where it passes through bulkheads or rigging tubes.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

Learn more.

Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

Learn more.

Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

Learn more.