Tapo S505D Matter Smart Dimmer Switch, Single-Pole

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Product guide

Tapo S505D Matter Smart Dimmer Switch, Single-Pole

The Tapo S505D Matter Smart Dimmer Switch is a single-pole wall dimmer for compatible lighting, controlled at the switch, through the app or with supported voice assistants. It requires neutral wiring and is not for wired 3-way circuits.

At a glance

Matter-certified control with Multi-Admin support across compatible ecosystems, supported features and controller requirements vary.
Set routines and countdown timers, use Away Mode, or apply Fade On/Off transitions.
The listing specifies leading-edge TRIAC dimming and different maximum loads for LED versus incandescent/halogen lighting.

Price

$12.99Save 35%

Reference price: ~~$19.99~~

Price checked: Nov 11, 2026

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Often bought together

Tapo Smart Switch, S515, Single-Pole/3-Way/4-Way, Matter Compatible | Works with Alexa, Siri, Google Home, SmartThings, UL Certified, 2.4GHz Wi-Fi

$15.99

Pros and cons

Pros

Offers local wall operation as well as app and supported voice control.
Schedules, countdown timers and Away Mode add lighting automation without requiring manual switching each time.
Fade transitions and adjustable brightness support different everyday lighting preferences.

Cons

Requires a neutral wire, a suitable wall box at least 2 inches deep, and 2.4 GHz Wi-Fi.
Designed for single-pole wiring only, not a wired 3-way circuit.
Dimming depends on compatible bulbs, the listing advises checking bulb compatibility with its dimming type.

Technical specifications

21 specifications

Identity
Brand	Tapo
Model	Tapo S505D

Electrical and dimming
Operating voltage	120 volts
Current rating	2.5 A
Wattage listed	150 watts
Brightness range	0%–100% Brightness Control
Dimmable LED load claim	150W dimmable LED
Incandescent/halogen load claim	300W incandescent/halogen
Dimming method	leading-edge TRIAC phase-cut dimming

Connectivity and controls
Wireless connection listed	Wi-Fi
Control methods listed	App, Touch, Voice
Compatible platforms listed	Amazon Alexa, Apple HomeKit, Google Home, Samsung SmartThings
Matter	Matter-Certified Control

Installation and dimensions
Circuit	1-way
Neutral wire	required
Mounting types listed	Pole,Wall Mount
Dimensions listed	5.04 x 3.33 x 1.78 inches
Wall box depth required	at least 2 inches

Materials and protection
Material listed	Plastic
Indoor use	Indoor, dry-location use only
Temperature range	32°F–104°F

What to know before buying

Installation requires neutral wiring, a suitable wall box at least 2 inches deep, 2.4 GHz Wi-Fi, and indoor dry-location use, consult an electrician if unfamiliar with wiring. Use compatible dimmable bulbs within the specified load limits. The listing's general 150 watts and 2.5 A details do not fully align with its separate maximum-load claims of 150W dimmable LED or 300W incandescent/halogen, so confirm the applicable load for your lighting before purchase.

What’s in the box

Included

Tapo S505D ×1
Wall plate ×1
Wire nuts ×2
Mounting screws ×2
Quick Start Guide

Who is it for?

A good fit for

Single-pole lighting circuits with a neutral wire and compatible dimmable bulbs.
Buyers seeking Matter-based control alongside wall, app and supported voice operation.
Households that want schedules, timers, fade transitions or Away Mode for connected lighting.

Less suited to

Wired 3-way circuits or installations without a neutral wire.
Setups without a suitable wall box, 2.4 GHz Wi-Fi, or compatible dimmable lighting.

Tapo S505D Matter Smart Dimmer Switch, Single-Pole · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 833 ratings

5 stars79%79%
4 stars11%11%
3 stars5%5%
2 stars1%1%
1 star4%4%

Customer feedback highlights responsiveness to voice commands, appearance and perceived value, while reports on connectivity, dimming consistency, reliability and ease of use are mixed. For buyers, those concerns matter because remote and ecosystem control depend on a suitable setup, and dimming results also depend on compatible bulbs. The aggregate rating is 4.6 out of 5 from 833 ratings, but that figure alone does not explain individual experiences.

Positive themes

Customers report quick response to voice commands and say the appearance blends well with home decor.
Some customers describe the switch as easy to use and praise its dimming capabilities.

Negative themes

Some customers report connectivity problems, HomeKit compatibility issues, inconsistent dimming, or sudden failures.

Mixed feedback

Feedback on connectivity, dimming performance, reliability and ease of use is mixed.

Frequently asked questions

Can the S505D be used in a 3-way circuit?

No. The listing describes it as a single-pole dimmer and says it is not for wired 3-way circuits.

What wiring and installation conditions does it require?

It requires a neutral wire, a suitable wall box at least 2 inches deep, and 2.4 GHz Wi-Fi. The stated use is indoors in a dry location.

What lighting loads does the listing specify?

It claims up to 150W for dimmable LED or 300W for incandescent/halogen lighting at 120V, 60Hz, and says to check bulb dimming compatibility. Other electrical details are not fully aligned, see the listing-details note.

Which smart-home systems are listed?

The listing names compatible Apple Home, Amazon Alexa, Google Home and Samsung SmartThings platforms. Supported features and controller requirements vary by ecosystem.