AdvanSea DEPTH S400 Display Sounder

The AdvanSea DEPTH S400 is a dedicated marine depth display designed for skippers who want reliable readings at a glance. Its wide‑angle, backlit LCD with extra‑large digits delivers outstanding visibility day and night, while the rugged front sealing ensures durability in harsh marine environments. Installation is quick and clean thanks to the screwless mounting system, and seamless connectivity lets you integrate it into existing onboard data networks. Choose the S400 for a compact instrument that turns essential depth information into confident decisions on every passage with precision, clarity, and ease of use. Available now from Stratosens.com.

Key Benefits and Applications

• Instant legibility in all conditions — Large, high‑contrast digits and an amber backlight with multiple levels make the S400 readable from the helm or companionway, in bright sun or at night.
• Confidence in shallow waters — Visual trend indication and configurable shallow and deep alarms help you anticipate depth changes when entering harbours, anchorages, or navigating narrow channels.
• Robust for marine use — A sealed front face resists spray and weather, and the anti‑fog display coating maintains visibility in humid, cold, or variable climates.
• Fast, no‑stress installation — A rear locking collar and rubber gasket deliver a neat, screwless fit that protects gelcoat and saves time on refits or upgrades.
• Seamless integration — NMEA 0183 input and output allow the S400 to exchange depth data with chartplotters, repeaters, or onboard data recorders, simplifying your instrument network.
• Smart alerts that matter — Shallow, deep, and low‑battery alarms keep you focused on sailing by notifying you only when action is required.
• Built for sailboats and cruisers — Compact footprint and low power draw make it ideal for cockpits and nav stations on cruising monohulls, multihulls, and daysailers.

Featured technical specifications

• Depth measuring range — 0.5 to 199 m, depending on the transducer and installation quality, providing reliable coverage from marina approaches to coastal cruising.
• Measurement resolution — 0.1 m from 0 to 19.9 m and 1 m from 20 to 199 m for precise reading where it matters most.
• Depth accuracy — ±0.1 m up to 5.0 m and within 2% beyond 5.0 m under standard conditions, helping you judge safe under‑keel clearance.
• Keel offset — Programmable ±9.9 m so the display can show either depth under keel or depth below surface according to your preference.
• Transducer compatibility — Works with common 200 kHz through‑hull transducers from leading manufacturers; performance depends on the chosen model and hull placement.
• Display and readability — Monochrome transflective LCD with anti‑fog coating, wide viewing angle, backlit screen and keys, and extra‑large 45 mm digits.
• Water protection — Front face rated IP66 for resistance to spray and powerful jets of water encountered on deck.
• Connectivity — NMEA 0183 input and output for depth and related sentences, plus proprietary AdvanSea bus for integration with S400 series instruments.
• Alarms and indicators — Shallow and deep depth alarms, low‑battery warning, and a depth trend arrow for quick situational awareness.
• External alert capability — Built‑in buzzer and output for an external alarm to suit louder cockpits or enclosed helm stations.
• Power and consumption — 10 to 16.5 V DC operating range with typical consumption below 150 mA including backlight, ideal for energy‑conscious cruising.
• Operating temperatures — Designed for -10 to +50 °C operation and -20 to +60 °C storage to handle real‑world marine climates.
• Dimensions and cut‑out — Compact 112 × 112 mm footprint with a 48 mm panel cut‑out for streamlined helm or bulkhead installations.
• Mounting hardware — Rear locking collar and rubber seal provide secure, screwless mounting that protects gelcoat finishes.
• Included protection — Supplied with a weather cover to shield the display when the boat is unattended.

Why the AdvanSea DEPTH S400 is the perfect choice

Pairing dependable depth performance with effortless readability and simple installation, the DEPTH S400 is a smart upgrade for any sailing instrument suite. When you order from Stratosens.com, you get specialist support, carefully curated marine electronics, and fast, reliable fulfillment—so you can equip your boat with confidence and focus on what matters most: safe, enjoyable time on the water.