Pack of 2 MAX485 Module RS485 TTL to RS485 MAX485CSA Converter Module For Integrated Circuits Products arduino
Sepcifications
on-board MAX485 chip
Tool for RS-485 communications
Low-power , Slew-Rate Transceiver
Easy wiring for RS-485 communication
Working voltage : 5V
board size : 44 (mm) x14 (mm)