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This is the diagram that simply shows how our S.O.S system works when a man overboards.

Emitter and Receiver Antenna

Our sample trasmitter is RF beacon transmitter also known as Radiolocation transmitter that works in 434MHz. Also, we use rotating directional antenna as a receiver (detector) which allows us to set an MOB Alarm and log GPS location.

Radio location transmitter (emitter)

directional antenna(receiver antenna)

Example emitter and Receiver can be found at:

http://www.jpaelectronics.co.uk/products.htm(emitter)

http://www.wifi.gr/(Receiver)

Pressure sensor

The pressure sensor works using a hydrostatic valve inside the sensor housing. In order to activate the hydraulic-valve it has to be covered by at least 10cm of water and can therefore not be accidentally be set of splash water. The pressure sensor however is not our product. We have designed our system to work on any self-inflating life jacket.

Pressure sensors

Examples of the pressure sensors can be found at : http://www.cmhammar.com/products/lifejacket-inflators

For more information, please read our Report