ELS31T’s Java ME OSGi framework allows application logic to run directly on the module, eliminating an external host MCU for simple data acquisition and reporting tasks, reducing BOM cost and power consumption. The integrated multi-constellation GNSS receiver (GPS, GLONASS, BeiDou, Galileo) suits combined positioning and cellular IoT use cases in a single compact footprint. Multi-SIM management supports up to 3 remote SIM profiles for carrier switching without physical SIM replacement in deployed field devices. The AT command interface is compatible with legacy 2G/3G designs for straightforward upgrade paths. Pre-certified for FCC, CE, PTCRB, and AT&T/Verizon carrier acceptance in North America and Europe.