Airmar PM111LH Transducer Pocket Mount Low-High CHIRP

Overview

Built for boat builders and retrofit anglers running fiberglass or metal hulls who need dependable dual-frequency sonar in a clean, flush-mount package. If your boat has a pocket milled into the hull, this transducer delivers the sonar performance of a thru-hull without requiring a fairing block — and it works with any deadrise angle or propulsion type.

The PM111LH is a pocket-mount transducer that sits flush with your hull, sending low and high frequency chirp signals to your fish finder. You get depth, water temperature, and reliable bottom tracking from 50 feet to beyond 6,000 feet. This is straight-forward sonar performance without the speed and fuel efficiency penalty of some transom-mounted alternatives.

Key Features

• Dual-frequency CHIRP (Low 38–75 kHz / High 130–210 kHz) — switches between wide coverage at depth and tight detail in shallow water — you control which frequency gives you the clearest picture of structure, fish, and bottom composition.
• Depth and integrated water-temperature sensor — reads bottom out to 6,000 feet on low frequency and 1,500 feet on high frequency — you'll know if you're fishing cold water or warm, and spot thermoclines instantly.
• Pocket-mount installation — sits flush inside a pre-cut hull pocket instead of hanging below the boat — cleaner lines, no drag penalty compared to external mounts, and works on any hull angle.
• Works with fiberglass, metal, and stepped hulls — planing, displacement, or hybrid — compatible with outboards, inboards, jet drives, and pod drives.
• 2 kW power output — solid sonar penetration and target separation in most freshwater and saltwater conditions.

Specs & What's Included

Low Frequency (38–75 kHz): 10° to 19° beam angle (port/starboard), 5° to 10° beam angle (fore-aft). Maximum depth 6,000 feet.

High Frequency (130–210 kHz): 4° to 8° beam angle. Maximum depth 1,500 feet.

Bottom coverage varies by depth: At 50 feet you'll see roughly 6 feet of bottom; at 100 feet, 14 feet; at 300 feet, 42 feet; at 600 feet, 84 feet; at 1,000 feet, 140 feet; at 1,500 feet, 210 feet. Depths beyond 2,000 feet exceed this transducer's practical range.

What's Included: Transducer only. No connector is included — you'll need to run your own wiring from the transducer to your fish finder. If your boat doesn't have a pre-cut pocket, retrofit installation is possible but requires careful hull work. Not sure if this fits your setup or how to wire it? Call or text us at (833) 831-4077 — we'll tell you straight.