RS232 to RS232 isolated TxRx, Transient voltage suppressors on Tx & Rx lines with peak power dissipation 200W @10 x 1000 us pulse, Two independent online voltage regulators, Isolation voltage up to 3000Vrms, ESD protection ±15 kV HBM, independent supply voltage: 5 ~ 12 VDC, Screw terminals, ABS case (AC Adapters not included)