Seeed’s LTE CAT.1 Pi HAT is an open source cellular extension modem for Raspberry Pi, based on u-blox LARA-R2xx series. It is compatible with Raspberry Pi 1 Model B+ and later versions. LTE CAT.1 Pi HAT is designed for LTE Category 1 networks and with 2G fallback (EU version only). Embedding common protocols, like TCP/UDP, HTTP.
The LTE CAT.1 Pi HAT supports UART and USB interfaces. Using UART, the Raspberry Pi communicates with the LTE CAT.1 Pi HAT via AT commands without any special driver. It’s suitable for building prototypes rapidly.
Features
Compatible with Raspberry Pi 1 Model B+ and later versions
LTE CAT.1 and support 2G fallback (EU version only)
UART and USB interface for communicate
Supports Grove I2C and Digital connector
Protocols on cellular module
Embedded TCP/UDP stack
Embedded HTTP, FTP, SSL
Dual stack IPV4/IPV6
3GPP TS 27.007 [8], TS 27.005 [9] standard AT command