Based on this product's specifications, here are some alternatives and similar models
Gateway Teltonika TRB142
Summary description:
The Teltonika TRB142 is a versatile gateway/controller featuring a 1200 MHz processor, SMA antenna connector, and supports Cat1 cable types. It includes RS-232 serial interface and power LED indicators, making it ideal for various IoT applications. Its compact design and reliable performance ensure seamless connectivity and data transmission.