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| # | Product | Best for | Lumens | Price |
|---|---|---|---|---|
| 01 | TP-Link Kasa Matter Smart Plug EP25 Making a lamp smart without changing its bulb | Plugs in. No wiring, no switch change, nothing fixed. | n/a - controls a lamp, does not light | Check price on Amazon #ad No live price right now, so we show none. How we earn |
| 02 | TP-Link Tapo P115 Smart Plug The same job on the newer app | Plugs in. No wiring, nothing fixed, comes with you. | n/a - controls a lamp, does not light | Check price on Amazon #ad No live price right now, so we show none. How we earn |
| 03 | Kasa (TP-Link) KS220 Smart Dimmer Switch A neutral-wire home that wants smart switches cheaply | NOT renter-safe. Replacing a switch is an electrical alteration. | n/a - controls a circuit, does not light | Check price on Amazon #ad No live price right now, so we show none. How we earn |
| 04 | Lutron Caseta Smart Dimmer Switch (no neutral required) Owners replacing a wall dimmer in an older home | NOT renter-safe. Replacing a switch is an electrical alteration needing permission. | n/a - controls a circuit, does not light | Check price on Amazon #ad No live price right now, so we show none. How we earn |
Specifications are the manufacturer or retailer published figures, compiled by hand. We have not measured them, and where a figure is not published we write "Not published" rather than guess.
01
The decision, in one table
| Smart plug | Smart switch | |
|---|---|---|
| Install | Plug it in - seconds | Replace a wall switch - electrical work |
| Controls | Whatever is plugged in | The circuit it is wired to |
| Hardwired ceiling light | Cannot reach it | Yes |
| Dimming | Usually on and off only | Dimmer models available |
| Neutral wire | Not relevant | Often required |
| Survives a flipped wall switch | Yes - the lamp has its own | Yes - it is the switch |
| Renter-safe | Yes | No - needs permission |
| Works for guests | Via the lamp's own switch | Yes - it is where they reach |
Smart plug for lamps; smart switch for hardwired lights. That is nearly the whole decision. A plug cannot control a ceiling fixture wired into the wall, and a switch is overkill for a lamp that already has a plug.
02
Where each one wins
Install: the plug, by a mile. A Kasa smart plug or a Tapo P115 goes between a lamp and the outlet in seconds, with no tools and no wiring. For a renter it is the default way to put a lamp on a schedule. The picks are in smart plugs for lamps.
Hardwired lights: the switch, because the plug cannot. A ceiling fixture wired into the wall has no plug for a smart plug to sit behind. Only a smart switch - a Kasa KS220 or a Lutron Caseta dimmer - controls it. That is the one job a smart switch does that nothing else can.
Dimming: the switch, or a plug-in dimmer. Most smart plugs only switch on and off. A smart dimmer switch dims a hardwired light; for a lamp, a plug-in dimmer does the same job without wiring - see plug-in dimmers.
Wiring constraints: the plug has none. Many smart switches need a neutral wire, which older switch boxes often lack. The Caseta is designed to work without one; the KS220 needs one. A smart plug never raises the question. The switch comparison is in best smart light switches.
03
Who each one is for
Choose smart plugs if you rent, if the lights you want to control are lamps, or if you want something working today with no electrician. They are cheap, reversible and leave with you.
Choose smart switches if you own the place and the lights you care about are hardwired ceiling fixtures. They put control where everyone already reaches, work for guests without an app, and dim fixtures a plug cannot touch.
Use both in most homes: smart plugs on the lamps, smart switches on the ceiling circuits. They coexist happily, especially under one app or a Matter home.
A related question is smart bulbs versus switches, which turns on the fact that a smart bulb loses control when the wall switch is flipped - covered in smart bulbs vs smart switches. Neither a smart plug on a lamp nor a smart switch has that weakness.
The picks
The products behind this page
01
Making a lamp smart without changing its bulb
TP-Link Kasa Matter Smart Plug EP25
#ad No live price right now, so we show none. How we earn
Matter native with no hub and built-in energy monitoring, at roughly the price of one smart bulb - and it works with whatever high-CRI bulb you already chose.
| Lumens | n/a - controls a lamp, does not light |
|---|---|
| Color temperature | n/a |
| CRI | n/a |
| Power source | Plugs in between the lamp and the outlet |
| Dimmable | No - switches only. Dimming stays with the bulb. |
| Renter-safe method | Plugs in. No wiring, no switch change, nothing fixed. |
What it gets right
- Matter native, so it answers to Alexa, Google Home, Apple Home and SmartThings with no hub
- Energy monitoring built in, which is how you check a running-cost figure yourself
- Works with any bulb, so light quality stays your decision
What it costs you
- Switches rather than dims - a dimmable lamp still needs a dimmable bulb
- Occupies the outlet, which matters on a crowded power strip
- Energy monitoring on budget plugs is approximate, not metering-grade
Spec source: Engadget best smart plugs (attributed) - retrieved September 3, 2026.
02
The same job on the newer app
TP-Link Tapo P115 Smart Plug
#ad No live price right now, so we show none. How we earn
The EP25's sibling from the same manufacturer with the same energy monitoring and Matter support, on TP-Link's newer app with cleaner energy dashboards.
| Lumens | n/a - controls a lamp, does not light |
|---|---|
| Color temperature | n/a |
| CRI | n/a |
| Power source | Plugs in between the lamp and the outlet |
| Dimmable | No - switches only |
| Renter-safe method | Plugs in. No wiring, nothing fixed, comes with you. |
What it gets right
- Energy monitoring with a clearer dashboard than the older app
- Matter support, so it is not tied to one ecosystem
- Compact enough not to block the second socket on most outlets
What it costs you
- Another vendor app and account if you already use a different one
- Switching only - no dimming
- Consumption figures on budget plugs are within a few percent, not exact
Spec source: Smart Home Explorer smart plugs guide (attributed) - retrieved September 3, 2026.
03
A neutral-wire home that wants smart switches cheaply
Kasa (TP-Link) KS220 Smart Dimmer Switch
#ad No live price right now, so we show none. How we earn
Matter-certified dimming at the wall for a fraction of the hub-based systems - the value pick, provided your switch boxes have a neutral wire.
| Lumens | n/a - controls a circuit, does not light |
|---|---|
| Color temperature | n/a |
| CRI | n/a |
| Power source | Replaces a wall switch. Requires a neutral wire. Electrical work. |
| Dimmable | Yes |
| Renter-safe method | NOT renter-safe. Replacing a switch is an electrical alteration. |
What it gets right
- Matter certified, so it is not locked to one app's future
- Dimming at the wall, which survives anybody flipping the switch
- The cheapest credible smart dimmer in current roundups
What it costs you
- Requires a neutral wire - older switch boxes frequently have none
- Hardwired, so it needs permission if you rent and generally an electrician
- Wi-Fi per switch, so a large install loads the network
Spec source: Smart Home Dock - best smart light switches, tested, no-neutral coverage - retrieved September 3, 2026.
04
Owners replacing a wall dimmer in an older home
Lutron Caseta Smart Dimmer Switch (no neutral required)
#ad No live price right now, so we show none. How we earn
Handles 150W of dimmable LED and, unusually, needs no neutral wire - which is the single thing that stops most smart dimmers going into an older house.
| Lumens | n/a - controls a circuit, does not light |
|---|---|
| Color temperature | n/a |
| CRI | n/a |
| Power source | Replaces a wall switch. Electrical work. |
| Dimmable | Yes - wall, app, or Pico remote |
| Renter-safe method | NOT renter-safe. Replacing a switch is an electrical alteration needing permission. |
What it gets right
- No neutral wire required, so it fits older homes where most smart dimmers will not
- 150W dimmable LED or 600W incandescent - far more than a domestic circuit needs
- The wall switch keeps working normally for anyone without the app
What it costs you
- Electrical work. In a rental this needs the landlord's agreement.
- Needs the Caseta bridge for app and voice control
- Stays with the property when you leave
Spec source: Amazon listing - Lutron Caseta dimmer - retrieved September 3, 2026.
FAQ
Questions people actually ask
+What is the difference between a smart plug and a smart switch?
A smart plug sits between a device and an outlet and controls whatever is plugged into it. A smart switch replaces the wall switch and controls the circuit it is wired to, including hardwired ceiling fixtures.
+Is a smart plug or smart switch better?
For a lamp, a smart plug - it installs in seconds and needs no wiring. For a hardwired ceiling light, a smart switch - a plug cannot reach it. They solve different problems.
+Can a smart plug dim a lamp?
Most cannot - they switch on and off only. For dimming, use a plug-in dimmer or a smart dimmer switch, or a smart bulb in the lamp.
+Can renters use smart switches?
Replacing a wall switch is electrical work that needs permission. Smart plugs need nothing, which makes them the renter's default for controlling lamps.
+Do smart switches need a neutral wire?
Many do, which rules them out in older switch boxes with no neutral. Some, like Lutron Caseta, are designed to work without one.
Sources
Where the numbers came from
- Engadget - best smart plugs
- Smart Home Explorer - best smart plugs and outlets
- Smart Home Dock - best smart light switches, tested, no-neutral coverage
- Smart Home Explorer - Lutron Caseta vs Matter smart switches
All sources retrieved September 3, 2026.
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About the author
Sawyer V. An enthusiast who reads the spec sheets and does the arithmetic. No lab, no test bench.