This is an industrial USB TO RS485 Bidirectional Converter with original CH343G and SP485EEN chips inside, providing better stability and compatibility, built-in light-ning proof tube, resettable fuse, ESD and TVS protection circuits, etc. Compatible with Mac, Linux, Android, WinCE, Win11/10/ 8.1 /8/7/XP, etc. ^^Transmission distance up to 1.2 km--The USB signal can be converted into a balanced differential RS485 signal and the transmission rate is stable. The reliable speed is 300bps ~ 3Mbps, the transmission distance is about 1.2 km for RS485, and about 5 meters for USB.
^^Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic. ^^Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance. 3 LEDs for indicating the power and transceiver status. ^^Comes with Online Development Resource/