Specification:
Origin: Mainland China
Type: Module
Condition: New
Model Number: TTL to RS485 Signal Converter

Module Highlights:
(1) 3.3V and 5.0V power supply perfectly compatible
(2) 3.3V and 5.0V signals are perfectly compatible
(3) Absolutely using original imported chips, industrial grade design, super anti-interference ability, while using more effective 485 design for lightning protection, can be used in industrial sites and field under harsh environment, the working temperature is -40 ℃ to +85 ℃, the transmission distance can reach a thousand meters (with the 850 meters of 2 * 1.5 cable to do the test, it is recommended to use within 800 meters, more than 800 meters please add repeater)
(4) Half-hole process design, board thickness 0.8mm, can easily be used as a daughter board, can also be used as a solder terminal
(5) With RXD and TXD signal indicators, the transmission and receipt status can be seen at a glance
(6) Size: 43*16mm/1.69*0.63in
(7) Net weight: 2g

Note: 
1. This transmission module realises the interchange of TTL signals and RS485 signals, but you must know that 485 is a half-duplex communication, this communication method can achieve two-way communication, but not in both directions at the same time, must take turns alternately; that is to say, each end of the communication channel can be the transmitting end or the receiving end, but at the same time, the information can only have One direction of transmission.
2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
3. Please allow 1-2cm measuring deviation due to manual measurement.