Router stability. Because it is used in unattended conditions, the stability of the device is very important, which is related to the stability of the entire network data and the realization of functions. The device needs to support software restart and hardware watchdog to ensure long-term operation without any problems.
Extensibility of routers. Some routers only have 2 network ports, and some do not support serial ports, so the compatibility of subsequent projects should be considered when purchasing. It is quite good to choose an industrial-grade router with multiple network ports and serial ports.
Router price. Due to cost considerations, price is an important factor for many users. The price is too high, beyond the cost budget, and users cannot accept it. Is the lower the price the better? Not really. The extremely low price means that the product may not use industrial-grade modules, which may affect the stability. It cannot be because the initial procurement cost is low and the later maintenance cost is high, which is not worth the loss. So, a reasonably priced router is important.
