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

Catalog # 304120 - Model 8212 DB25 RS232 12-Position Switch

    DB25 12-Position SwitchDB25 12-Position SwitchDB25 12-Position SwitchDB25 12-Position Switch
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    • DB25 12-Position Switch
    • DB25 12-Position Switch
    • DB25 12-Position Switch
    • DB25 12-Position Switch
Base Price:
Catalog No: 304120
Model No: 8212
Product Type:Switches: Copper
Cable Type/Port Connector:DB25 Switch Ports
Channels per Switch Chassis:1
Manual Control/No Power Required:LineSelect® Manual Operation
Pins Switched:Pins 1-12
Local Control:Rotary Knob


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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Twelve-Position Manual Network Switch, DB25, Rotary Switches
Model 8212 12-Position DB25 RS232 Switch, Desktop, Manual Operation

  • Quickly, Easily, Reliably Select Any One of Twelve RS232 Devices.

  • Increases network efficiency by facilitating sharing of peripherals!

  • Field Proven, Highly Reliable!


  • PORT CONNECTORS: (13) DB25 female connectors labeled 1 through 12, and COMMON.
  • FRONT PANEL CONTROL: (1) Manual Rotary Switch on front panel selects 1 through 12.
  • POWER: No power required. Manually operated.
  • DIMENSIONS: 13.5" W x 3.0" H x 8.0" D (34.3 x 7.6 x 30.32 cm).
  • WEIGHT: Approximately 2.8 lb. (1.3 kg).

LineSelect® Model 8212 12-Position DB25 RS232 Application:

The drawing illustrates a COMMON DB25 interface device connected to the DB25 COMMON port with access to twelve other devices connected to the DB25 ports 1 through 12.
Connect between the COMMON device and any one of the 12 Devices at a time.

LineSelect Model 8212 12 Position DB25 Rs232 Application:


  • Allows the user quick connection to any one of twelve DB25 RS232 devices from on COMMON device.
  • Manual operation via front-panel rotary switch.
  • High quality sealed switch with self-wiping low impedance contacts.
  • Switches pin 1 through 12 of the DB25 interface.
  • Transparent to data speed and format.
  • Eliminates the need to plug and unplug cables.
  • No external power required.
  • Improves computer efficiency by allowing sharing of peripherals.
  • Attractive anodized black box packaging provides EMI/RFI shielding.
  • Lifetime guarantee against manufacturing defects.

The Model 8212 Twelve-Position DB25 RS232 Switch allows the user the capability of sharing a DB25 interface device connected to the "COMMON" port among twelve other devices connected to the ports labeled 1 through 12.

Custom Network Switches are available. Contact us by phone, email, or complete the Online Custom Products Form, by clicking here.

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

All ESL Secure Offline Switches are available for export.

All data switches, 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.


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