jot4p
1
Hello,
I need a system (like arduino) that reads a sensor (water level) 3 or 4 times a day and send me the data by GSM (sms for example)...
This system has to work with battery and the battery has to last a year (or more).
The space (box) available around 15 x 15 x 5 cm.
Thanks!
fungus
2
You want to build one, you want to buy one, you want to manufacture/sell one.... ?
jot4p
3
fungus:
You want to build one, you want to buy one, you want to manufacture/sell one.... ?
" I need a system..." 
..I want to build .. but buy...