Its ultra-compact 18x21mm form factor integrates 23 GPIO pins
Gigabit Ethernet Ports 2x USB 3
which provides automatic frequency selection across 50 channels to avoid interference from Wi-Fi
and optional 32 KHz oscillator
Nano-SIM cards can be used with a micro-SIM adapter
Industrial Grade Serial Server RS232/485 To WiFi and Ethernet, Modbus Gateway, MQTT Gateway, Support POE Function, Metal Case IOTIF - IOT Trainer Kit with Pi 4B 4GB Its ultra-compact 18x21mm form factorIndustrial Grade Serial Server RS232 485 To WiFi and Ethernet, Modbus Gateway, MQTT Gateway, Support POE Function, Metal Case Industrial Grade Serial Server RS232 485 To WiFi and Ethernet, Modbus Gateway, MQTT Gateway, Support POE Function, Metal Case This is an RS232 485 device data acquisitor IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to