Use the following sketch to put the SODAQ SARA into sleepmode.
The board will wake every 8 seconds to do a watchdog reset.
For this sketch two libraries are required.
// Bootup delay to programm the board.
* Initializes the CPU sleep mode.
* Powers down all devices and puts the system to deep sleep.
The power consumption in sleep will be ~26uA.
The board will immidiately go into sleep mode, to reprogram you must double press the reset button, the led will fade blue.