RS485 To TTL Serial UART XY-K485 Converter Board (Support HomeAssistant)
The UART TTL to RS485 V3 communication circuit has a compact design with handy soldered Connectors to help you transfer signals from UART TTL communication standards (Raspberry Pi, Nodemcu ESP8266, ESP32, microcontrollers, embedded computers, etc.). ..) to RS485 Modbus communication standard and vice versa. The UART TTL to RS485 communication circuit is designed with high anti-interference ability, built-in buffers, self-healing fuses, anti-interference diode to help the system run more stably, safely and without burning the control board. center. The RS485 communication pin on the circuit has a Mass pin, if the system has a grounded ground line, it can be used to connect to this Mass pin to increase anti-interference and lightning protection. The circuit supports the connection of multiple RS485 points (maximum 32 devices) on twisted pair lines with a distance of up to 1.2km, the circuit is designed so that the points can be "hot" without fear of the module dying. without disconnecting the total transmission line.
Specifications: - Operating voltage: 3 ~ 33VDC. - RS485 transmission distance can be up to 1km (recommended to use less than 800m and dedicated bus wire for RS485). - Standard TTL 2.54mm pin. - There are LEDs to notify RX and TX transmission status. Note: The TX of the MCU connects to the TX of the module, not cross-connect.
