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Catalog # 307277 - Model 7277 DB9 A/B Switch, Contact Control

    DB9 A/B Switch, Contact ControlDB9 A/B Switch, Contact ControlDB9 A/B Switch, Contact ControlDB9 A/B Switch, Contact Control
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    • DB9 A/B Switch, Contact Control
    • DB9 A/B Switch, Contact Control
    • DB9 A/B Switch, Contact Control
    • DB9 A/B Switch, Contact Control
Base Price:
Catalog No: 307277
Model No: 7277
Product Type:Switches: Copper
Cable Type/Port Connector:DB9 Switch Ports
Channels per Switch Chassis:1
Electronic Switches/Power Required:PathWay® Copper
Remote Control:Contact Closure
Pins Switched:9
Remote Port:DB9
Local Control:Pushbutton
Feature:Contact Control Remote Port


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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Path Way® Remotely Controllable Network Switch, DB9
Model 7277 Single Channel DB9 A/B Switch, with Contact Closure Remote Port, 1U Rackmount

  • Share a common network device between multiple network resources.

  • Switch to a backup network or a backup device quickly and easily.


  • PORT CONNECTORS: (3) DB9(F) connectors on rear panel labeled A, B, and COM.
  • FRONT PANEL CONTROL: (1) Manual pushbutton allows selection of switch position.
  • REMOTE CONTROL PORT: (1) DB9(F) REMOTE connector accepts contact closure signals from a remote device.
  • FRONT PANEL DISPLAY: (2) LED's A, B, indicate switch state and power status.
  • POWER: UL approved 100VAC-240VAC, 50Hz-60 Hz, wall mount power module supplies 12 VDC, 500 mA to the unit. Has 2-prong, US, non-polarized plug.
  • DIMENSIONS: Rackmount, 19" W x 1.75" H x 8" D. (48.3 X 4.4 X 20.3 cm)
  • WEIGHT: Approximately 4.2 lbs. (1.9 kg).

PathWay® Model 7277 DB9 A/B Switch Network Application with Contact Closure Remote Port:

The drawing illustrates a COMMON device connected to the DB9 COMMON port accessing two devices connected to the DB9 "A" and "B" ports. A DB9 REMOTE CONTROL operates the switch using dry contact open/close logic, (contact control remote).

PathWay Model 7277 DB9 A/B Switch Application


  • Allows quick connection to any one of two DB9 interface devices from one COMMON device.
  • The switch ports are transparent to all data.
  • All (9) pins of the DB9 interface are switched via break-before-make electromechanical relays.
  • Eliminates the need to plug and unplug cables.
  • The unit maintains last set position on power loss and continues to pass data.
  • Upon power up, the unit switches based on the state of Contact Closure.
  • Front panel pushbutton control.
  • REMOTE Contact Closure control and status provides dry contact logic to allow the control of the switch position and lockout state as well as obtain the present position.
  • Front panel LED's display switch position and power status.
  • Ideal for fallback applications.
  • Attractive all metal black box packaging provides EMI/RFI shielding.
  • Custom length DB9 cables available for your switch installation.
  • Municipalities, schools, government: On GSA Schedule!

The PathWay® Model 7277 DB9 A/B Switch with Contact Closure Remote Control Port allows the user the capability of accessing two separate devices, ports A and B, via connection through a device connected to the Common port.  The Model 7277 is enclosed in a 1U, full rack size, all metal black chassis designed to provide EMI/RFI shielding and fit in a standard rack.

The switch may be controlled manually via the front panel pushbutton or remotely from a DB9 port located on the rear of the unit.

Switch position state may be attained via the front panel LED or by a set of dry contacts on the remote DB9 port.


(Cat No 517277) CE, RoHS, and UL listed table mount power module, 100 VAC - 240 VAC, 50Hz/60Hz for use in place of standard power module that is included with the unit. Has IEC 60320 C14 inlet.  Ideal for international applications.

This high-quality network switch is available to city, state, and federal government purchasers at a discounted price and favorable payment and shipping terms via GSA Schedule GS-35F-0286V. Click here for GSA details.

Model 7277 is available to government purchasers on our GSA Schedule GS-35F-0286V. Call for discounted price and terms.

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

For custom network switches call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online form: /Products-Custom/Copper-Switch/

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.

All ESL products are available for export.

Electro Standards welcomes International inquiries: commutateur d'ordinateur,  equipo interruptor, interruttore del calcolatore, interruptor do computador, dator switch.

Available Combo Deals