Electro Standards Laboratories

The Model 4503 Seismic-Proof DB9 A/B switch and its feed-through connector have successfully passed the rigorous seismic testing of the EPRI "SQURTS" Program, qualifying it for use in nuclear power plants.

The PathWay® Model 4441 4-channel port sharing device allows a single destination port, the Common port, to automatically connect through to any of four source channels, A, B, C, or D based on data activity.

Model 4426 CAT5 compliant network switch shares a single port RJ45 interface device connected to the COMMON port among up to six devices connected to the A, B, C, D, E, and F ports. Remote control via serial RS-232 ASCII character commands.

Model 4421 features an RS-232 serial security enhanced Supervisory Remote Port. With authentication, a terminal connected to this port communicates with the unit, determines status, changes switch position, and/or locks out front panel switching.

The Model 4410 monitors its COMMON port and its "A" port for a specified trigger character sequence for remote switching. The front-panel pushbutton can be locked and unlocked in the same fashion.

The Model 4407 RJ45 A/B switch with dual remote control ports allows off-site monitoring and switch management. Switch position status may be attained via front panel LED display or by either of the two remote serial ports.

The Model 4404 Eight-Channel Remote Power Reboot Switch with 10 Base-T LAN/WAN Remote Access permits the user to cycle power to eight remotely located devices that may become locked up. Simple point & click operation.

Model 4374 SC Duplex Fiber-to-T1 A/B Switch/Converter accesses either of two fiber networks from a computer connected to a T1 RJ45 COMMON port. In event of a power failure, the switch returns to the last ordered position when power is restored.

Model 4294 allows a fiber optic device connected to the unit's FC Simplex COMMON connector to access any of four fiber optic networks connected to A, B, C or D ports. The fiber strand interface is 100/140 micrometer graded index multimode fiber.

Model 4289 4-Way Fiber Optic Switch Converter allows access to any one of four fiber otpic network ports, 1,2, 3, or 4, from a computer connected to the COMMON 100 Base-TX port. The switch acts as a signal source preventing optical signal loss.