EBYTE NB144S 4-Channel Serial Server RS232/422/485 RJ45 Modbus Gateway TCP/UDP/MQTT DC 8-28V AT Command Build-in Watchdog 850.125~930.125MHz it can be connected directly

it can be connected directly to the RX/TX pins

Low power standby current consumption: 302uA @ 12V

default 115

the built-in TCXO (Temperature Compensated Crystal Oscillator) keeps frequency drift under tight limits across wide temperature fluctuations

EBYTE NB144S 4-Channel Serial Server RS232/422/485 RJ45 Modbus Gateway TCP/UDP/MQTT DC 8-28V AT Command Build-in Watchdog 850.125~930.125MHz it can be connected directlyThe Ebyte NB144S industrial 4 channel serial server integrates RS232 RS422 RS485 multi serial interfaces and RJ45 Ethernet port, supports bidirectional transparent transmission, built in Modbus TCP RTU automatic conversion, TCP UDP MQTT HTTP multi network protocols, DC 8 28V wide power input, hardware watchdog, and 40 to +85 Celsius wide temperature range for multi serial industrial IoT networking. Parameter Item NB144S Product Model NB144S Serial