Wide range of applications, two-way transmission communication distance up to 1200 meters Stable data transmission, with work indicator, low data transmission delay, clear at a glance Automatic mode conversion of RS485 / 422 protocol Built in Ti chip and ch340 chip, mature solution is stable and durable, suitable for industrial control system Built in fast transient voltage suppression protector, protect RS485 interface terminal, protect data from loss, more secure transmission