401-943-1164 / US & Canada Toll Free: 877-943-1164

Catalog # 309094 - Model 9094 DB9 3-Position Switch

    DB9 3-Position SwitchDB9 3-Position SwitchDB9 3-Position Switch
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    • DB9 3-Position Switch
    • DB9 3-Position Switch
    • DB9 3-Position Switch
Base Price:
Catalog No: 309094
Model No: 9094
Switch Media:Copper
Channels per Switch Chassis:1
Enclosure Configuration:Rackmount
Pins Switched:9
Local/Manual Control:Rotary Knob

DB9 Manual Network Switch, Rotary Switches

Shipping Terms

Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

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Model 9094 DB9 A/B/C Switch, Manual, Rackmount

  • Switch ANY device having a DB9 interface, since all nine pins are switched.


    • (3) DB9 (Female) connectors labeled A, B, and C
    • (1) DB9 (Male) connector labeled COMMON.
  • FRONT PANEL CONTROL: (1) Rotary switch on front panel selects A, B, C.
  • POWER: No power required.  Manually operated.
  • DIMENSIONS: Rackmount 19.0" W x 1.75" H x 8.72" D (48.3 x 4.4 x 20.3 cm).
  • WEIGHT: Approximately 4.0 lbs (1.9 kg).


The diagram illustrates one device connected to the DB9 (Male) COMMON port sharing among three other devices connected to the A, B and C DB9 (Female) ports.

  • The COMMON port is a DB9 male connector.
  • The DB9 A, B, and C ports are female connectors.

LineSelect® Model 9094 A/B/C Application drawing.


  • Allows quick connection to any one of three DB9 devices from one COMMON device.
  • Manual operation via front panel rotary switch.
  • High quality sealed switch with self-wiping low impedance contacts.
  • The ports are transparent to all data.
  • All 9 pins of the DB9 interface are switched via break-before-make rotary switch.
  • A, B, and C port connectors - DB9 (female).
  • COMMON port connector - DB9 (male).
  • Improves computer network efficiency by allowing sharing of peripherals.
  • Eliminates the need to plug and unplug cables.
  • No external power required.
  • Attractive all metal black box packaging provides EMI/RFI shielding.
  • Custom length DB9 cables available for your switch installation.
  • Lifetime guarantee against manufacturing defects.

The Model 9094 DB9 A/B/C Switch allows the user to access three DB9 devices connected to its A, B, and C ports with one DB9 device connected to its Common port.  The unit is manually operated, requiring no power.  Port selection is quick and easy via front panel rotary switch. The Model 9094 is enclosed in a 1U, full rack size, all metal chassis designed to provide EMI/RFI shielding and fit in a standard 19" rack.

Electro Standards can supply all your Network Cable requirements. Click here to reach our CABLES, COPPER NETWORK Webpage

Custom Network Switches are available. Contact us by phone, email, or complete the Online Custom Products Form. Click the link to fill out the form.

Electro Standards can supply all of your Network Cable requirements. Click here to reach our Copper Cable Assemblies Webpage.

Custom Length DB9 cables available for your switch installation.
State cable length (XXX) when ordering.
Part Number  Description
990127-XXX   XXX Feet, DB9 F/F, 9-Conductor Unshielded PVC Cable
990125-XXX   XXX Feet, DB9 M/F, 9-Conductor Unshielded PVC Cable
990126-XXX   XXX Feet, DB9 M/M, 9-Conductor Unshielded PVC Cable 

All data switch boxes, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects.  The limit of ESL liability is limited to the cost of the ESL product provided.

*Prices online are subject to change and verification.

All ESL Manual Data Network Switches are available for export.

Available Combo Deals