Robust and reliable RS232 to 4G LTE Cat1 IoT gateway. Linux based advanced firmware with firewall and VPN functionality is perfect for upgrading connectivity for existing or new equipment. TRB family devices are designed to be small, lightweight and energy efficient - allowing you to do IoT projects with ease. 

Download link : https://teltonika-networks.com/downloads/en/trb142/TRB142_Flyer-v1.1.pdf