Electro Standards Laboratories

The Model 700 with two voltage test points, one plus (+) and one minus (-), allows the user to synthesize missing control signals. This new feature along with the Tri-State LED display enables easy testing of a computer's serial data interface.

The Model 8652 DB25 RS232 A/B/C/D/E/F Switch allows the user the capability of sharing a DB25 interface device connected to the COMMON port among six other devices connected to the A, B, C, D, E, and F ports.

In NON-SECURE Mode, the switch system passes the connection of copper/fiber voice and data lines from the conference room equipment to the building data network. In SECURE mode, the system disconnects the lines, isolating conference room equipment.

Three-way switching with the Model 5014 DB25 A/B/C Switch. This switch features a slim rackmount configuration and easy switching via pushbutton or remotely with contact closure signals.

Model 4527 CAT5 RJ45 A/B code-operated 10/100Base-T switch provides a pushbutton for local switching and a DB9 Remote port for control via dry contact open/close logic.

The M4521 Single Channel HD15 A/B network switch may be controlled by manually operating the front panel pushbutton or remotely from the DB9 contact control Remote port. The DB9 Remote port provides control by dry contact open/closure logic.

Model 7297 8-to-1 DB25 Switch with RS232 Serial Remote allows the user the capability of sharing a single DB25 interface device among eight others.

The Model 7125 is a DB9 A/B Automatic Fallback Switch, with Contact Closure Remote Port

M4520 DB15 A/B Switch features a pushbutton control. A dry contact closure across the specified pins of the remote port provides the change position command to the switch. Shorting the Lockout pins on the remote port locks out front panel control.

Model 4515 AB network switch shares a device connected to a single pin of each RJ11 port (COMMON port pin) between two devices connected to the A and B pins for each port. Remote access via Ethernet connection or via ASCII commands.