5V MAX485 TTL To RS485 Converter Module Board  for Arduino
Feature:
Operating voltage: 5V
On-board MAX485 chip
A low power consumption for the RS-485 communication
Slew-rate limited transceiver
5.08mm pitch 2P terminal
Convenient RS-485 communication wiring
All pins of chip have been lead to can be controlled through the microcontroller
Board size: 44 x 14mm