Description Features: brand new and high quality The onboard MAX485 chip, is a for RS - 485 communication of low power consumption, limit rate transceiver. The onboard 5.08mm spacing 2pin terminals, convenience of RS - 485 communication connection. All three, chip pins has led, can be operated by single chip microcomputer control. Working voltage: 5V. The board size: 44mm x14mm. Specifications: Material: ABS Working voltage: 5V Board size: approx. 44x14mm/1.73x0.55in Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 5 x MAX485 module