Gea is the flagship radio module of the DeepWave system: it has a large ePaper display (like the one from ebooks), 2 inputs for Smart Sensor chosen from those available (temperature, humidity, differential pressure, light), local acoustic alarms via buzzer. The Smart Sensors (not included) are supplied with an Accredia traceable calibration certificate and allow easy, economic and quick recalibration of the system, without the intervention of external technicians. The DeepWave system is based on the Lo.Ra radio protocol (Long Range) which allows transmission over very long distances and generally to have only one Helios receiver to cover all sensors. Batteries are easily replaceable by the user.