IoT Gateways: extracting the data 04. 85 This is the most recommended option for outdoor networks since it is encased in a rugged, waterproof enclosure which protects it from the harshest conditions. It can receive, parse and store frames in its local database. Meshlium can also forward sensor data directly to the Internet via Ethernet or GPRS/3G/4G protocols, depending on the connectivity options available in the area. Meshlium Gateway Connected by USB to a computer. This is recommended for applications of few nodes that are indoors or for testing while configuring the network. The Waspmote Gateway is also used to send commands to the sensor network, thus at least one unit should be purchased with the first kit of Waspmotes. Waspmote Gateway NB-IoT, Cat-M or 4G can be used in networks placed in difficult access locations, when using a single point of data collection alone or in combination with the other two options, using the cellular radio only to send SMS alert messages. Sigfox and LoRaWAN are special cases of cellular communications: LPWAN (Low Power, Wide Area Network). They are indicated for many applications (Smart Cities, Smart Parking, security, etc). Nodes send data directly to the back-end with low power consumption and cheap fees. Waspmote NB-IoT / Cat-M / 4G / Sigfox / LoRaWAN