Product description:Great Sensors for Arduino Project. Having Fun With Electronics and Programming! Available on MekatroniksDescription: MAX485 chip is a low power consumption for RS-485 communication, limit the slew rate transceiver. 5.08 (mm) pitch terminal, convenient RS-485 communication wiring. Chip leads all pins can be controlled through the microcontroller.Specification: Operating Voltage: 5V PCB Size: 44mm x 14mm (L*W)