Highlights: (1) Compatible with 3.3V and 5.0V power supply. (2) Compatible with 3.3V and 5.0V signal. (3) Absolute using imported chips, industrial design, anti-interference ability, while using more effective mine design can be used in the industrial field and harsh field environments, the working temperature of -40 to + 85 transmission distance up to 1 kilometer (made with 850 meters of cable F1.5 tests recommended in the 800 meters, more than 800 m, please add repeaters). (4) Semi-hole pads, onboard module, thin PCB, having a thickness of 0.8mm. (5) Has RXD, TXD signal indicator light, monitor send and receive status. Features: (1) The module is fully considered mine design, long-distance transmission signal 485 in the wild, the module Connected to the ground terminal is connected to the earth, can play a very good anti-jamming and anti-lightning effect, more secure; it can not connect with the ground when the indoor short-distance transmission. (2) Using the standard 2.54 pitch design, easy secondary development. (3) Has a 120 ohm termination resistors, shorted R0to enable the termination resistor. (4) Support multi-machine communication, allowing access at up to 128 devices on the bus (5) The module can be hot swapped, the signal does not appear dead phenomenon. (6) A large area of copper to prevent interference. Package Included: 1 x UART Serial Port to RS485 Converter Function Module RS485 to TTL Stable Module Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and well make you feel satisfied.