Seeed Studio SenseCAP Standard 4G Sensor Hub is an easy-to-deploy industrial-grade 4G cellular station that uses the MODBUS-RTU RS485 protocol to communicate with sensors. This hub can be connected to a maximum of 32 RS-485 sensors and is capable of collecting various sensor data simultaneously. The sensor hub 4G data logger features a built-in GPS positioning function and supports 4G/3G/2G communication including a global LTE frequency band. This robust and stable sensor hub is designed with industry standards such as IP66 rating, waterproof, and dustproof. Additionally, this sensor hub also supports local storage of data and remote upgrade/maintenance. Typical applications include smart cities, smart buildings, environmental monitoring, smart industry, and smart agriculture.