Will this fit into a standard outlet/switch box in the wall?

In my opinion, it would be tight if you could get it in. Plus, you wouldn't have access to the power switch if needed.

Can I use this for my electric dryer? To notify me when it finished?

You can use it for electric dryer as long as its current rating is below 16Amp (or 20 Amp) - depends on the model you have. As for notification - it does not have such the function, however, you can see if the elctric dryer is On or Off by checking Amp readining (current) on the screen (either on the unit iteself or eWelink application).

Would this support 10volts for the lowest cuttoff setting?

It does not have such functionality (undervoltage relay)

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SONOFF POWR320D Elite 20A WiFi Smart WiFi Wireless Light Switch with Energy Monitoring, Universal DIY Module for Smart Home Automation, Works with Amazon Alexa & Google Home, No Hub Required

SONOFF POWR320D Elite 20A WiFi Smart WiFi Wireless Light Switch with Energy Monitoring, Universal DIY Module for Smart Home Automation, Works with Amazon Alexa & Google Home, No Hub Required

Product ID: 507579321

Details

Connector type
Screw
Contact type
Normally
Current rating
15 Amps
Operating voltage
240 Volts
Operation mode
automatic

⚡20A max load power

📊6-month real-time energy tracking

🔌WiFi + voice control

₩79703

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Empower your smart home with precision energy mastery!

LIGHTNING FAST ESP 32 CHIP - 200% faster processing for real-time monitoring and smooth app control.
POWER UP TO 20 A WITH CONFIDENCE - Handles heavy-duty appliances without breaking a sweat.
SEAMLESS SMART HOME INTEGRATION - Works flawlessly with Alexa & Google Home—no hub needed.
TRACK EVERY WATT HOURLY MONTHLY - 6-month detailed energy data with exportable reports for ultimate control.
INSTANT ALERTS OVERLOAD PROTECTION - Set thresholds and get notified before your devices are at risk.

The SONOFF POWR320D Elite is a cutting-edge 20A WiFi smart switch featuring an upgraded ESP32 chip for ultra-fast performance. It offers real-time power, current, and voltage monitoring with a built-in LCD display and tracks energy consumption up to 6 months with exportable data. Compatible with Alexa and Google Home, it requires no hub and includes overload protection with customizable alerts, making it an essential tool for proactive energy management in modern smart homes.

Specifications

ASIN	B09XB3RZB9
Actuator Type	Hinge Lever
Best Sellers Rank	#75,319 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Home Automation Modules
Brand	SONOFF
Brand Name	SONOFF
Circuit Type	1-way
Color	White
Compatible Devices	Alexa/Google Home Compatible Devices
Connectivity Protocol	Wi-Fi
Connector Type	Screw
Connector type	Screw
Contact Material	Metal
Contact Type	Normally Closed
Contact type	Normally Closed
Control Method	Voice
Control Type	voice, app, LAN
Controller Type	Amazon Alexa
Current Rating	15 Amps
Current rating	15 Amps
Customer Reviews	4.4 out of 5 stars 736 Reviews
International Protection Rating	/
Item Dimensions	10 x 10 x 10 millimeters
Item Weight	140 Grams
Lower Temperature Rating	70 Degrees Celsius
Manufacturer	SONOFF
Material Type	Polycarbonate
Model	POWR320D
Mounting Type	Wall Mount
Number of Items	1
Number of Positions	1
Operating Voltage	240 Volts
Operating voltage	240 Volts
Operation Mode	automatic
Operation mode	automatic
Part Number	POWR320D
Specification Met	CE, UL
Switch Type	TRIAC
Terminal	Screw
Unit Count	1.0 Count
Upper Temperature Rating	40 Degrees Celsius
Wattage	4800 watts

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TrustScore 4.5 | 7,300+ reviews

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Great experience from order to delivery. Highly recommended!

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₩79703

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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