G30 SOS GSM Wireless Alarm System
Let’s have a look at the functions of the G30 SOS GSM Wireless Alarm System
Built in GSM Module
Can learn 30 wireless devices including remotes, panic buttons and sensors
Can preset 5 groups of alarm calls ,5 groups of SMS alarms
Built-in high-capacity rechargeable back up battery
Sms Alert when there is power failure and when there is power recovery
This small simple SOS GSM Wireless Alarm system should not be underestimated.
This Alarm Kit contains the following:
1 x SOS GSM Alarm System Panel
1 Wireless Panic button
Built in Rechargeable battery
Power Adapter (DC 12V)- South African Plug
1 x User Manual
What does SOS really stand for?
The signal isn’t even really supposed to be three individual letters.
It’s just a continuous Morse code string of three dots, three dashes, and three dots all run together with no spaces or full stops (…—…).
Since three dots form the letter “S” and three dashes form an “O” in International Morse code.
Though, the signal came to be called an “SOS” for the sake of convenience.
That connection has led to the letters coming into their own as a visual distress signal divorced from Morse Code.
And those in need of rescue sometimes spell them out on the ground to be seen from above.
Why do they use SOS?
The origin of S.O.S.
S.O.S. doesn’t stand for anything but was chosen because it is easily transmitted in Morse (also known as Morse code).
An alphabet named after its inventor Samuel Morse in which letters are represented by combinations of long and short light or sound signals
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