Furuno DRS4W WiFi Wireless Radar



4 kW Radar WiFi Radome with 15 metre power cable.
Turn your existing iPad, or iPhone into a functional 4kW pulse Radar via WiFi connection using the MARINE RADAR - IOS APP
 (Requires Ipad or iphone, not included, to act as display using free Marine Radar IOS App) 

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The world's first wireless Radar

You can access directly from your iOS devices.


Move around and explore.

With the new 1st Watch Wireless Radar, you can do things previously impossible. You can bring the Radar display where ever you go, even put it on the iPhone in your pocket.

Get it at the 1st glance.

Plug in the Radar, set up the app from App Store and you're good to go. With familiar gestures it's a breeze to use, you can even use two iOS devices simultaneously.

Less cables, more flexibility.

Installation is simple with its compact and lightweight Radar antenna. Mount it, plug in the power cord and you're done.

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iOS App

Download on the App Store

Marine Radar – iOS App

To use the 1st Watch Wireless Radar (DRS4W), you will need to download the Marine Radar app from Apple App Store. The app is available for free, just click the MARINE RADAR - IOS APP button above.


  • To start the 1st Watch Wireless Radar you just have to press the TX button.

  • Pressing the (+) and (-) buttons will change the range, the range rings will also change accordingly. The range rings are spaced at even intervals making it easy to judge distances in the blink of an eye.

  • For increased visibility you can choose between Day and Night mode. The color of the Radar echoes can also be changed.

  • With one touch, a small popup window will appear, giving you the bearing and distance to the target of your choice. This is great if you want to know how far away a boat is that you've just spotted.

  • Off center, a practical way to see further ahead. Just drag your finger on the screen.

This application is aimed at being a help during the voyage. Electronic aids are not a replacement for basic navigation skills and common sense.


Model Name DRS4W
Peak Output Power 4 kW
Type ø488 mm Radome (19 inch)
Frequency 9410 ± 30 MHz
Range Scales 0.125 to 24 nm
Antenna Rotation Speed 24 rpm
Wind Load Relative wind 70 kn
The number of connectable devices
iOS devices 2 units
Communication Frequency 2.4 GHz band
Display iPad™/iPad mini™/iPhone™
Compliant OS iOS6/iOS7
User Direction Vertical/Horizontal (iPad, iPad mini only)
Language English
Method of obtaining "Marine Radar" at Apple Store (Free of charge)
Mode Auto Gain, Auto STC, Rain, Auto Noise rejector, Sector blank, Off center, Cursor(measure target)*
*iPad, iPad mini
12/24 V, 2.1-1.0 A (max)
Temperature -25°C to +55°C
Waterproofing IP26
1. Antenna Unit RSB-126 1. Radome mount OP03-93
2. Power cable 10/15/20/30 m  
* Please note that iOS devices are sold separately and do not come included with this product.


Radome Antennas