The SIP Series of Subminiature D interface protectors ensures the reliable operation of parallel and serial devices such as printers, and point-of-sale terminals, mainframes and most other devices using Subminiature D connectors, which are sensitive to destructive transient energies. Standard applications include Ethernet, Token Ring, RS232, RS422 and LAN/WAN interfaces. Special applications can be accommodated through our Custom Products Group. Transient surges can enter electronic equipment through any pathway provided and damage expensive communications hardware. If a facility has a reliable AC power protection system in place, transient surge energies can still be generated within a building by sources such as inductive load switching, ground loop currents and electrostatic discharge. SIP Series protectors combine compact enclosures with extremely fast response times of less than 5 nanoseconds. They are specifically designed to give added security to electronic devices sensitive to voltage rises or ground loop energies and have been particularly effective in areas prone to lightning activity. Subminiature D (9, 15, & 25 pin) interface connectors are available in configurations protecting all pins or specific pins as required. All these features make the SIP protectors the most cost effective and versatile devices of their kind available today. NOTE: This is a general description please see title for actual product. State-of-the-art, avalanche diode technology Compact in-line installation High speed, high energy handling capability Low shunt capacitance to reduce signal loss STD. CLAMP VOLTAGE: RS422/RS423/RS485(7.5 VOLTS), PARALLEL(7.5 VOLTS), RS232(18 VOLTS)