Extron 232/4 (part number 26-433-02) — a 4 ft (1.2 m) 9-pin D male-to-female RS-232 control cable from the Extron 232 Series. Extron has retired this part number.

Four feet buys a little more reach than the 2 ft version without turning into slack: enough to cross a rack bay or drop two or three rack units. RS-232 remains the control path for a large part of the Extron catalog, letting a MediaLink Controller, an IP Link serial interface or a third-party processor send commands and read status back from switchers, scalers and amplifiers. Every pin on the 232/4 runs straight through — transmit on pin 2, receive on pin 3, ground on pin 5, and the rest carried end to end — inside an NEC CM rated non-plenum jacket.

Key Capabilities

• 4 ft (1.2 m) finished length, measured neck to neck between the strain reliefs.
• 9-pin D male to 9-pin D female termination.
• All nine pins passed straight through with no crossover.
• Pin 2 transmit, pin 3 receive, pin 5 ground per Extron's cable guide.
• Color-coded conductors, brown on pin 1 through black on pin 9.
• NEC CM rated non-plenum jacket.
• Retired Extron part number — useful for matching an existing installed system.

Where It Is Used

Serial links inside one rack where the two devices are a few rack units apart: control processor to matrix switcher, room controller to display interface, or an RS-232 tail from a rack shelf to a patch position in classroom, boardroom, worship, broadcast and clinical AV racks.

Specifications at a Glance

• Length: 4 ft (1.2 m)
• Connectors: 9-pin D male to 9-pin D female
• Pin configuration: all pins passed; Tx on 2, Rx on 3, Gnd on 5
• Jacket rating: NEC CM, non-plenum

Also referenced as Extron 2324, 232-4, part number 2643302.