SCM TTL to RS485 Converter 485 to Serial UART USART Automatic Flow Cnt

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 485 lightning protection design can be used in the industrial field and harsh field environments; the working temperature of -40 to + 85 Degree Celsius ;transmission distance up to 1 kilometer (made with 850 meters of cable F1.5 tests recommended using in the 800 meters,when more than 800m please add repeaters). (4) Semi-hole process design, thickness 0.8mm, can easily use as a picture board, it can also be welded terminal use. (5) Has RXD, TXD signal indicator lights, monitor send and receive status. Features: (1) The module is fully considered lightning protection design,when long-distance transmission in the wild, the module #34;Connected to the ground #34; terminal is connected to the ground, can play a very good jamming and anti-lightning effect,so more secure; it can not connect with the ground when the indoor short-distance transmission. (2) Using the standard 2.54 pitch design, easy to secondary development. (3) Has a 120 ohm termination resistors, shorted R0 to enable the matching 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 signal interference.