We developed a stand-alone DAQ and FEE for low power consumption and outdoor applications. The system can work autonomously thanks to dedicated algorithms implemented in a embedded system. The FEE, based on the EASIROC chip that gives the readout of Silicon photomultipliers (SiPMs), digitizes the amplitude of the signals and provides time information with time of flight capability. Different trigger logics can be programmed and physical and accidental coincidences rates can be measured. The SiPMs temperature is controlled by thermoelectric cells and, thanks to a network of temperature and humidity sensors, a real-time software is able to set the optimal operating point, adapting to external conditions and eventually stop and resume the data acquisition to avoid the damage of the electronics.The system has been tested in several muon radiography experiments.