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iOptron RS232-RJ9

SKU 8412

Manufacturer Part # 8412

by iOptron
Original price $25.00 - Original price $25.00
Original price
$25.00
$25.00 - $25.00
Current price $25.00
Availability:
More on the way

Need to connect your iOptron hand controller to a computer for firmware updates or direct serial control? The iOptron RS232-to-RJ9 cable (#8412) is the dedicated link that makes it possible. Designed for use with Go2Nova hand controllers that feature a 4-pin RJ9 serial port, this cable allows communication between your hand controller and a computer’s serial RS232 port—or a USB-to-serial adapter (sold separately).

The #8412 cable features a DB9 RS232 connector on one end and a 4P4C RJ9 plug on the other, with straight-through internal wiring designed to match iOptron’s signal configuration. This is the correct cable for loading firmware updates or enabling ASCOM/INDI control via the hand controller's serial interface.

Key Features:

  • Purpose-Built for iOptron Hand Controllers: Designed specifically to connect RS232 serial ports to iOptron Go2Nova hand controllers with RJ9-style serial inputs.

  • Standard DB9 to RJ9: One end terminates in a 9-pin male RS232 connector, while the other features a 4P4C RJ9 plug compatible with the serial port on the hand controller.

  • Straight-Through Wiring: Uses a direct pin-to-pin wiring layout as required by iOptron’s firmware and control protocols.

  • Reliable Data Link: Supports firmware flashing, mount control via third-party software, and diagnostic access through the hand controller’s serial interface.

  • Works with USB Adapters: For computers without a native RS232 port, pair it with a Prolific or FTDI USB-to-serial converter (such as iOptron part #8435).

Technical Specs:

  • Connector 1: DB9 RS232 (male)

  • Connector 2: RJ9 4P4C (male)

  • Wiring: Straight-through

  • Cable Length: Approximately 3 feet

  • Use Case: Firmware updates, serial control via hand controller

  • iOptron Part Number: 8412

Compatibility Notes:

This cable connects only to the RJ9 serial port on select iOptron Go2Nova hand controllers. It does not plug into the mount directly. Be sure to confirm that your hand controller features the correct RJ9 port (often labeled “Serial”) before ordering.

Observing Tip:

For a successful firmware update, use this cable in combination with iOptron’s firmware loader and connect the hand controller—not the mount—directly to your PC via the RS232 interface. If you’re using a USB-to-serial adapter, make sure the correct COM port is selected in your update utility.

 This cable may be needed for the following iOptron mounts:

  • CEM60/CEM60EC
  • AZ Mount Pro
  • iEQ45 Pro and iEQ30 Pro
  • CEM25/CEM25EC
  • ZEQ25
  • SmartEQ/SmartEQ Pro/SmartEQ Pro+
  • CubePro with 8408 HC
  • Cube-II
  • SkyGuider Pro (hand controller firmware upgrade only)

The cable may not be compatible for other brand mounts.

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