TTL level UART TX/RX serial TO RS485 Module with TX/RX led

Highlights:

Compatible with 3.3V and 5.0V power supply.
Compatible with 3.3V and 5.0V signal.
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). Semi-hole pads, onboard module, thin PCB, having a thickness of 0.8mm. Has RXD, TXD signal indicator light, monitor send and receive status.

Features:

• The module supports long-distance transmission signal 485m 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.
• Using the standard 2.54 pitch design, easy secondary development.
• Has a 120 ohm termination resistors, shorted R0to enable the termination resistor.
• Support multi-machine communication, allowing access at up to 128 devices on the bus
• The module can be hot swapped, the signal does not appear dead phenomenon.
• A large area of copper to prevent interference.