A7681SA is the LTE Cat 1bis module that supports wireless communication modes of LTE-FDD. It supports maximum 10Mbps downlink rate and 5Mbps uplink rate.

A7681SA adopts LGA form factor and is compatible with A7682E, A7683E (CAT1 modules) , SIM800C, SIM868 series (GSM/GPRS modules) and SIM7080G(LPWA), which enables smooth migration from 2G products to LTE products, and greatly facilitates more compatible product design for the customer needs.

A7681SA supports multiple built-in network protocols, supports drivers for main operation systems (USB driver for Windows, Linux and Android etc.) and software function. AT commands are compatible with the SIM800 series modules,and some models also support multi- mode GNSS. In addition,  A7681SA integrates main industrial standard interfaces, with powerful expansibility, including abundant interfaces such as UART, USB, I2C, GPIO, which is suitable for main IOT applications such as telematics, surveillance devices, industrial routers, and remote diagnostics etc.