Product description Features At A Glance Support USB to RS485 bidirectional conversion Onboard Original FT232RNL and SP485EEN chip. Fast communication, stable and reliable, better compatibility 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