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Model 4132 DB9 A/B Switch, Automatic Fallback with RS232 Remote Catalog # 538240

    DB9 A/B Switch Auto Fallback w/RS232 RemoteDB9 A/B Switch Auto Fallback w/RS232 RemoteDB9 A/B Switch Auto Fallback w/RS232 RemoteDB9 A/B Switch Auto Fallback w/RS232 Remote
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    • DB9 A/B Switch Auto Fallback w/RS232 Remote
    • DB9 A/B Switch Auto Fallback w/RS232 Remote
    • DB9 A/B Switch Auto Fallback w/RS232 Remote
    • DB9 A/B Switch Auto Fallback w/RS232 Remote
Base Price:
Catalog No: 538240
Model No: 4132
Product Type:Switches: Copper
Cable Type/Port Connector:DB9 Switch Ports
Channels per Switch Chassis:1
Electronic Switches/Power Required:PathWay® Copper
Remote Control:Auto Fallback, RS232 Serial
Auto Fallback:Data Monitor Port A, TD & RD Activity
Pins Switched:9
Remote Port:DB9
Local Control:Pushbutton
Feature:Automatic Fallback


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 4132 Single Channel DB9 Automatic Fallback A/B Switch with RS232 Serial Remote Port

  • Automatic fallback based on loss of data on Port "A".

  • Data activity "Watch Dog" switch keeps data flowing.


  • PORT CONNECTORS: A, B, and COMMON are DB9(F) located on the rear panel.
  • FRONT PANEL CONTROL: (1) Manual pushbutton for local switching or to override Automatic Fallback Mode to Manual Mode.
  • DISPLAY: (2) Front panel LED’s display present position, power status and operating Mode.
  • REMOTE: (1) DB9(F) connector on rear panel accepts RS232 Serial Data commands for Remote Control operation.
  • POWER: UL approved 100VAC-240VAC, 50Hz-60Hz wall mount power module supplies 12 VDC, 500mA to the unit.
  • Has 2-prong, US, non-polarized plug.
  • DIMENSIONS: Desktop, 8.12” W x 2.37” H x 7.31” D. (20.7 x 6.1x 18.6 cm)
  • WEIGHT: Approximately 1.9 lbs. (0.9 kg)

PathWay® Model 4132 Single Channel DB9 Automatic Fallback A/B Switch Application with RS232 Remote Port!

PathWay Model 4132 DB9 Automatic Fallback Switch Application shows a COMMON DEVICE connected to the DB9 male COMMON Port with access to a Primary Line A RS232 or to the Secondary Line Port B RS232 connected to DB9 female ports (Port A and Port B; DB9 Female ports).
A DB9 RS232 Remote port accepts RS232 ASCII commands for Remote Control Operation.



  • The switch ports are transparent to all data.
  • All pins of the DB9 interface are switched via break-before-make electromechanical relays.
  • The unit maintains last set position on power loss and continues to pass data.
  • Front panel pushbutton control.
  • Remote RS232 ASCII commands that allow the user to change the Fallback Mode, set and query the Delay and Recovery times along with the Recovery Data Loss Period, obtain switch status, as well as query firmware version number, and query serial number.
  • Remote port Contact Closure status on pins 6, 7 and 8 provides dry contact logic to obtain the present position.
  • Automatic switching based on RS232 TD and RD activity on Port A.
  • Front panel LED’s display present position, mode, and power status.

The PathWay® Model 4132 Single Channel DB9 A/B Auto Fallback Switch with RS-232 Remote Control allows the user the capability of sharing a single port interface device connected to the “COMMON” port among two other devices connected to the “A” and “B” ports, with remote access functionality.   The Model 4132 is packaged in a slim desktop style enclosure.

The switch may be controlled locally by manually operating the front panel push button or remotely from the DB9 female serial interface Remote port located on the rear of the unit.  The front panel LED display indicates the switch position, switch mode, and power status.

The unit monitors data activity on port “A”.  If the unit is in the A position, and activity is lost for the duration of the set delay time, the unit automatically switches to the B position. Afterwards, if activity is continuously detected on port “A” for the duration of the set recovery time, the unit will switch back to the A position automatically.

Option: Wide Range Power Module:

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

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

For custom network switches call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online Custom Product Request form.

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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Electro Standards welcomes International inquiries: commutateur de réseau, conmutador de red, switch di rete, przelacznik sieciowy, switch de rede, nätverksswitch,

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