Description

📊 EXTREME-MASTER SONAR S300 – New generation of fish finders for bait boats | NEW 2025

EXTREME-MASTER SONAR S300 is the latest, advanced fish finder created for professional carp anglers. 6 cones (200-800 kHz), water temperature sensor, echogram recording + GPS, EXTREME ONE bait boat app (iOS + Android).

🔥 WHAT’S NEW IN S300 vs S200?

⚡ 2x MORE POWER AND ACCURACY!

✅ 6 cones (200-800 kHz) vs 5 cones (200-715 kHz) in S200
✅ 800 kHz – the highest frequency on the market – sees more than competitors’ 200 kHz, 2x better accuracy than 715 kHz in S200!
✅ Water temperature sensor – NEW! Not available in S200
✅ 2x higher transmit power – better image at greater depths
✅ Even more precise carp detection – see details S200 couldn’t show
✅ All S200 features + hardware improvements

🌡️ NEW: Water Temperature Sensor

The S300 is the first in the EXTREME-MASTER series to have a built-in water temperature sensor:

📊 Real-time measurement
📈 Temperature recording with echogram
🎯 Correlation analysis: temperature ↔ carp activity
💾 Temperature history in Microsoft cloud

Why is this important? Carp are very sensitive to water temperature. Knowing where and at what temperature they were active allows you to plan your next trips!

⭐ Why EXTREME-MASTER SONAR S300?

✅ ALL IN ONE System – in combination with the EXTREME-PILOT autopilot + EXTREME-ONE app, you create a complete system with GPS accuracy <0.5m (phone = scan + control + telemetry)
✅ 6 cones (200-800 kHz) – best bottom imagery on the market
✅ Temperature sensor – analyze carp activity
✅ Echogram + GPS recording – analyze at home, return to the hotspot
✅ Dual mode with EXTREME-PILOT – unique! Record bait boat path + echogram
✅ 9 color themes – Green Ufo, Downvision, Rainbow, Raywave…
✅ Beam angle adjustment – 45°, 35°, 25°, 15°, 9°
✅ Depth up to 60m – greater than S200 (40m)
✅ Range 200-300m+ – from bank to tablet/phone
✅ Multi-language interface – Polish, English, German, Italian, Spanish, French, Czech, Slovak + voice announcements (with autopilot + app)
✅ Ergonomic app interface – customizable layout, all functions at your fingertips, designed for carp anglers

📡 EXTREME-ELRS – Standalone Transmitter (Optional)

The S300 is compatible with the latest EXTREME-ELRS transmitter:

📡 Drone-proven technology – tested in aviation
✅ Reliability and stability – interference-free
✅ Increased range – further than standard WiFi
✅ LBT (Listen Before Talk) 100mW – compliant with PL regulations
✅ Standalone – independent module

What is LBT? The transmitter “listens” before transmitting – if it detects interference on a frequency, it automatically switches to a clear one. This gives you zero connection issues!

🎮 Control Console with Microsoft Cloud (Optional)

A dedicated control console that works with the S300 is also available:

🎮 Bait boat control – without a phone/tablet
📍 GPS point saving – directly on the console
📊 Echogram recording – all in one place
☁️ Synchronization with Microsoft cloud – access from any device
🔋 Long operating time – a full day on the water

How it works?

Scan your fishing spot from the console
Save echograms + GPS points
Return home
Open the EXTREME ONE app on your phone/tablet
Everything is already synchronized via the Microsoft cloud!
Analyze comfortably at home
Return to the water and immediately deploy to saved points

🔄 UNIQUE FEATURE: Dual mode with autopilot!

This is a feature NO competitor has!

If you have an EXTREME-PILOT bait boat autopilot (GPS), you can record the bait boat’s route + echogram in real-time:

🚤 Autopilot follows the route – You monitor the echogram
📹 Echogram + GPS + temperature recording – entire route saved
🏠 Home analysis – comfortably review echograms on your couch
🎯 Identify the spot – pinpoint it accurately on the echogram
🚀 Autopilot to point – send your bait boat exactly there
💾 Save marker – remember the hotspot forever
☁️ All scans in Microsoft cloud – access routes, echograms, and temperatures from any device, analyze at home on your couch

💡 ALL IN ONE: Your phone/tablet is all you need – scan + autopilot control + telemetry + maps + water temperature. No extra monitor or gear!

Competition (Deeper, Garmin Striker): Does not have this feature! You have to manually remember where you saw fish.

📐 6 Cones – Beam Angle Adjustment

The EXTREME-MASTER SONAR S300 has 6 different beam angles to choose from (S200 had 5):

Beam Angle	Frequency	Application
45°	200 kHz	Wide scan area – fast sweeps
35°	290 kHz	Balance width/precision – versatile
25°	455 kHz	Medium precision – for most venues
15°	600 kHz	High precision – structural details
9°	715 kHz	Highest S200 precision
7°	800 kHz	NEW! Ultra-precision – deep waters, carp in structure

800 kHz – Why?
At 800 kHz, you get 2x better resolution than at 715 kHz. You see:
– Individual carp in a shoal (not just a “blob”)
– Bottom structure in the finest detail
– Carp in dense vegetation (where 715 kHz only shows “green”)

🎨 9 Color Themes

Customize the echogram colors to your preferences:

🟢 Green Ufo – classic green
🔵 Downvision – like Lowrance DownScan
🌈 Rainbow – rainbow spectrum
🔵 Blue Navy – navy blue marine
☢️ X-ray – black and white contrast
🟤 Sepia – vintage brown
🌊 Deep – dark for deep waters
🟣 Vexi – purple
✨ Raywave – modern gradient
🎨 Custom color – create a personalized scheme

🔧 Technical Specifications

Parameter	EXTREME-MASTER S300	EXTREME-MASTER S200
Frequency	✅ 200-800 kHz (6 cones!)	200-715 kHz (5 cones)
Temperature Sensor	✅ YES – NEW!	❌ NO
Transmit Power	✅ 2x greater	Standard
Scanning Depth	✅ Up to 60 meters	Up to 40 meters
Transmission Range	✅ 200-300m	✅ 200-300m
Beam Angles	✅ 45°, 35°, 25°, 15°, 9°, 7° (NEW!)	45°, 35°, 25°, 15°, 9°
Color Themes	9 + custom	9 + custom
Echogram Recording	YES + GPS + temperature	YES + GPS
Dual Screen Mode	Map + echogram simultaneously	Map + echogram simultaneously
App	EXTREME ONE (iOS + Android)	EXTREME ONE (iOS + Android)
Autopilot Compatibility	EXTREME-PILOT (dual mode)	EXTREME-PILOT (dual mode)
ELRS Compatibility	✅ YES (optional)	✅ YES (optional)
Control Console	✅ YES (optional)	✅ YES (optional)
Power Supply	From bait boat battery 11.1V-14.8V (3S-4S LiPo)	From bait boat battery 11.1V-14.8V (3S-4S LiPo)
Current Consumption	0.7A/5V (no additional batteries needed)	0.7A/5V (no additional batteries needed)
Warranty	24 months	24 months

⚙️ Installation by authorized service

IMPORTANT! The EXTREME-MASTER SONAR S300 is installed by authorized distributors:

🔧 You bring: Your bait boat
📦 Service installs the S300 fish finder into your bait boat
🔌 Optional: EXTREME-ELRS + control console
✅ You get: A ready-to-use bait boat with the latest fish finder + EXTREME ONE app

Authorized distributors:

🔹 Śląskie: Sylvi-Boat (505 745 958), Masterboat (531 290 274, 793 777 812)
🔹 Wielkopolskie: MateoNaHaczyku (698 967 654)
🔹 Małopolskie: Hybrid-Boat (601 199 739)

📦 What you get?

✅ EXTREME-MASTER SONAR S300 Fish Finder
✅ User manual PL
✅ Access to EXTREME ONE app (iOS + Android)
✅ Technical support (email + phone)
✅ 24-month warranty
✅ Free updates

🆚 Comparison: S300 vs S200 vs Competition

Feature	EXTREME S300	EXTREME S200	Deeper CHIRP+ 2
Frequency	✅ 200-800 kHz (6 cones)	200-715 kHz (5 cones)	⚠️ 290-675 kHz (3 beams)
Temperature Sensor	✅ YES	❌ NO	✅ YES
Transmit Power	✅ 2x greater	Standard	Standard
Echogram Recording	✅ YES + GPS + temp	✅ YES + GPS	✅ YES (without GPS)
Dual mode with autopilot	✅ YES (UNIQUE!)	✅ YES (UNIQUE!)	❌ NO
Depth	✅ 60m	50m	✅ 100m
Range	✅ 300m+	200-300m	⚠️ 100m
ELRS standalone	✅ YES (optional)	✅ YES (optional)	❌ NO
Control Console	✅ YES (optional)	✅ YES (optional)	❌ NO

❓ Frequently Asked Questions (FAQ)

What’s the difference between S300 and S200?

Key differences:

✅ 800 kHz vs 715 kHz – 2x better accuracy
✅ 6 cones vs 5 – additional 7° cone at 800 kHz
✅ Temperature sensor – S300 has it, S200 doesn’t
✅ 2x greater power – better image at depths
✅ 60m vs 40m – greater scanning depth
✅ ELRS and console compatibility – S300 only

Can I use it without an autopilot?

YES! The fish finder works independently. The EXTREME-PILOT autopilot, ELRS transmitter, and console are optional extras.

Does it record echograms?

YES + GPS + temperature! The S300 records:

– Echogram (bottom image)
– GPS position
– Water temperature at a given spot

You can return to the exact spot where you saw fish and check at what temperature they were active!

What is the range?

300m+ from the bank to your tablet/phone (direct WiFi). Even more with the ELRS transmitter!

When is the launch and price?

The official launch will be announced soon.
Price: Will be provided at the official launch.

Follow our social media and sign up for our newsletter to be the first to know!

🎯 Who is EXTREME-MASTER SONAR S300 for?

✅ Recommended if:

You are a beginner, intermediate, or expert – the intuitive interface works at all levels
You are looking for the best fish finder on the market – no compromises
You want 800 kHz – 2x better accuracy than S200
You need a temperature sensor – for carp activity analysis
You plan for console + ELRS – standalone control
You have an EXTREME-PILOT – dual mode is a must-have
You fish using the venue exploration method – mapping + analysis
You are looking for the best value for money – the most features on the market in the premium class

❌ NOT recommended if:

IMPORTANT! This fish finder is designed ONLY for bait boats – NOT suitable for rowboats/inflatables (no mounting option)
S200 is sufficient for you – if you don’t need 800 kHz and a temperature sensor
You don’t have a bait boat – this fish finder is dedicated to bait boats

📞 Technical Support

🇵🇱 Polish manufacturer – EXTREME-BaitBoat.pl
📧 Email: piotr.kaczmarczyk@extreme-baitboat.pl
📱 Phone: +48 695 056 242 (Mon-Fri 3:00 PM-6:00 PM)
⏱️ Warranty: 24 months
🔄 Updates: Free
🛠️ Service: Repairs in Poland

🚀 NEW 2025 – Be the first!

EXTREME-MASTER SONAR S300 – a new generation of fish finders for professionals!

📢 Price and launch date: Soon!
📱 Sign up for the newsletter: Be the first to know!

Polish product. PL technical support. Compatible with EXTREME-PILOT autopilot, ELRS transmitter, and control console.

🎬 Watch the S300 presentation video on our YouTube channel!

EXTREME-MASTER SONAR S300 – Fishfinder 800kHz with Temperature Sensor | NEW FOR 2025