Shopping guide
Smart plug basics
Last updated September 24, 2026
A smart plug sits between a wall outlet and a device, letting you switch that device on or off from your phone, on a schedule, or by voice assistant. They're an easy first step into smart-home gadgets.
Good uses
- Lamps you want to switch on at sunset
- Holiday lights on a schedule
- A fan or coffee maker with a simple on/off switch
Not-so-good uses
Smart plugs only cut or restore power. They work best with devices that turn on when power returns. Devices with electronic buttons may not restart on their own. Don't use them with appliances that shouldn't be left unattended or that draw more power than the plug is rated for — check the plug's maximum rating and the manufacturer's guidance, especially for heaters.
Compatibility to check
- Wi-Fi band: many smart plugs connect only to 2.4 GHz Wi-Fi. Check your router.
- Ecosystem: check whether the plug works with the voice assistant or smart-home app you already use.
- Standards: newer smart-home standards such as Matter aim to make devices work across different ecosystems. If that matters to you, look for it in the specifications.
- Hub: some plugs connect directly to Wi-Fi; others need a separate hub.
Other features
- Energy monitoring: some models estimate how much power the connected device uses.
- Size: a compact plug won't block the second outlet.
- Outdoor use: only use plugs rated for outdoor use outside.
Privacy and security
Keep the app and plug firmware updated, use a strong Wi-Fi password, and review the manufacturer's privacy information.
Summary
- Use smart plugs with simple on/off devices.
- Check the power rating.
- Check Wi-Fi band and ecosystem compatibility.
- Keep firmware updated.
This guide is general information, not professional advice. Always check the product details, seller, and return policy on the store's page before buying.