Specifications Product TypeSurge Suppressor/ProtectorBrand NameBlack BoxManufacturerBlack Box CorporationProduct NameQuick-Connect Surge Suppressor Manufacturer Part NumberSP603AHeight1.5"Width3.5"Depth5.4" Weight (Approximate)8 ozBlack Box Surge 4 Wire Terminal Strip Protector SP603A RS-232,422,423,485 & Ethernet. Clamping voltage: 7.5V.Protection for RS-422/423/485 and 10BASE-T. Low shunt capacitance to reduce signal loss. State-of-the-art avalanche diode technology. Keep your network and communications devices (I/O cards, controllers and etc.)Easy installation with Quick-Connect connectors right at the port, just strip the cable and insert.Spring-loaded design prevents wires from loosening, corroding, or becoming brittle Black Box data-line protectors couldn't be easier to install. Quick-Connect Surge Protector can be easily installed with Quick-Connect connectors - right at the port - just strip the cable and insert. Spring-loaded design prevents wires from loosening, corroding, or becoming brittle. Low shunt capacitance is used to reduce signal loss. The unit features state-of-the-art avalanche diode technology and provides protection for RS-232, RS-422/423/485, Token Ring, and 10BASE-T. It keeps your network and communications devices (I/O cards, controllers, programmable logic controllers, modems, CSU/DSUs, hubs, and multiplexors) up and running. Will be shipped by Air Mail International priority mail.Thanks for lookingI will ship Worldwide. PayPalonly.Please contact me for shipping rates to Your country that is not listed in shipping location section and I will send You a shipping price.