Internet #312316845

Model #STS1

Store SKU #1005097558

120-Volt 20-Amp Portable Automatic Transfer Switch with Smart Technology

  • Smart transfer switch is versatile for home use; DIY installation
  • Portable, ultra-lightweight, and easy to maneuver at 9 lb.
  • Only compatible with ST Ready Westinghouse Portable Generators
  • See More Details

Product Overview

Easy to use with no electrician required, the ST Switch is a do-it-yourself smart portable automatic transfer switch that automatically transfers utility power to power from your portable generator. It’s a first of its kind technological innovation exclusive to Smart Switch Ready Westinghouse Portable Generators. The ST Switch is engineered to bridge the gap between traditional portable generators and standby generators by introducing home standby functionality with cost-effective versatility to provide a complete home backup power solution. With constant tracking, it monitors household connection to utility power during emergencies or blackouts to avoid power loss to the key appliances you need the most. Compact and lightweight at less than 9 lb., it’s ultra-portable and can be conveniently placed any location it’s needed. Maintaining support for your security system, sump pump, refrigerator, furnace, or essential home appliance is now more effortless than before. With dependability and added flexibility, the Westinghouse ST Switch enables you to have peace of mind around-the-clock.
  • Do-it-yourself process is simple to install with no electrician required
  • Smart Switch technology regulates power supply by turning on generator without manual operation to automatically switch power sources
  • Compact, easy to store, and maneuver at less than 9 lb.
  • Traditional duplex 120V 20A household outlets to connect your home necessities
  • Around-the-clock monitoring tracks household power loss during emergencies or blackouts to keep power on for 20A appliances or electronics up to 2400 watts
  • Power indicator lights communicate whether the utility power is on/off and when generator power is on
  • Comes with 25’ generator Smart Switch Ready control cable and integrated 25’ generator L14-30P power cord
  • Only compatible with Westinghouse Portable Generators with Smart Switch Ready outlet including the WGen5300, WGen7500, WGen7500DF, WGen9500, WGen9500DF, WGen12000, WGen12000DF

Info & Guides

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Electrical Product Type
Automatic Transfer Switch
Generator Accessory Type
Generator Management System

Warranty / Certifications

Manufacturer Warranty
1 Year

Questions & Answers


When the st switch is connected to the generator and working can you use the other outlets in the...

Asked by paddyd53 September 19, 2020

Yes, the other outlets can be used while the ST Switch is connected. Please ensure that the devices you wish to connect simultaneously fall within the starting and peak wattage of your generator.

Customer Reviews

  • 1 Customer Reviews
  • 5 out of 5 stars overall
100% of customers recommended.
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Los Angeles
Must Buy CA Scheduled Power Shutoffs
Customer review from logo
When PG&E came out with the scheduled power shutoffs, I knew I had to get a generator but standby units are so expensive. You have to buy the unit, pour concrete, have it installed with an electrician, etc. Then I found Westinghouse! Bought a 9500DF and this ST Switch, and just like that I have a home standby unit that I'm able to put away when I don't need it (unlike the eyesores you see in peoples backyards) at a fraction of the cost. Couldn't be happier with my purchase - Easy to use, setup, portable and has way more features/uses than traditional standby units.
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