Shark’s Head press release, November 2020. 

“Shark’s Head extends its existing range of modules”

Shark’s Head, the established developer of microcontroller solutions and Australian manufacturer of marine electronics equipment, is proud to announce a rather versatile new module that complements the existing range of its environmental sensor and the explosive gas sensor: 

The new 12V (DC) device controller can remotely and wirelessly turn all types of consumers like lights, fans or radios of up to 12 A on and off. It can also be used to limit the power, hence dimming the lights or slowing down the fan. For this it uses a technique called pulse-width modulation (PWM) which also works with devices that would not work properly if only the voltage was reduced using a conventional potentiometer. The new and popular LED lights are a prime example for this; whereas a common cabin fan can be turned into a more silent source of a nice breeze at night for a better sleep.

The module also measures how much current the device is drawing and it can even act as a user-settable and resettable fuse. 

If used in conjunction with a producer like a solar panel it shows how many Ampere-hours (Ah) are being produced and can also reduce the output or disconnect the solar charger altogether.

All the information is presented in an easy-to-use graphical web interface that can be accessed from anywhere around the boat, from multiple people at the same time, and (with an internet router) even from around the world. The user only needs a web browser: no special app needs to be installed or updated regularly. No internet connection is required while on-board as the system provides its own wireless access point (AP).

With Shark’s Head it’s no longer a guessing game how often the fridge turned on, for how long or how much energy (or Ah) it used over a given period, be it 24 hours or 12 months.

Such detailed information is becoming a vital safety issue nowadays as boaters rely more and more on their electrical system to work reliably at all times. 

The modern skipper wants to know how the system voltage varies throughout the day or which device is possibly dragging down the batteries.

All this is now available as a complete kit ready to go into your boat or motorhome/recreational vehicle (RV).

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