---
product_id: 355186220
title: "High Power Smart Switch Power Meter Switch (POWR3)"
brand: "sonoff"
price: "S$119"
currency: SGD
in_stock: true
reviews_count: 7
category: "Sonoff"
url: https://www.desertcart.sg/products/355186220-high-power-smart-switch-power-meter-switch-powr3
store_origin: SG
region: Singapore
---

# 25A/5500W max output Real-time power consumption tracking Built-in overload protection High Power Smart Switch Power Meter Switch (POWR3)

**Brand:** sonoff
**Price:** S$119
**Availability:** ✅ In Stock

## Summary

> ⚡ Empower your space with smart energy mastery!

## Quick Answers

- **What is this?** High Power Smart Switch Power Meter Switch (POWR3) by sonoff
- **How much does it cost?** S$119 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/355186220-high-power-smart-switch-power-meter-switch-powr3)

## Best For

- sonoff enthusiasts

## Why This Product

- Trusted sonoff brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Control from anywhere, anytime:** One-tap remote on/off switch saves energy and protects your devices on the go.
- • **Stay informed with live energy metrics:** Monitor voltage, current, and active power directly from your smartphone app.
- • **Power your high-demand devices with ease:** Supports up to 5500W output for ultimate control over heavy appliances.
- • **Safety first with smart overload cut-off:** Automatically shuts off power to prevent damage and hazards.
- • **Hands-free convenience with voice commands:** Seamlessly integrates with Alexa and Google Home for effortless smart control.

## Overview

The SONOFF POWR3 is a high-power smart switch designed for managing heavy-duty appliances up to 5500W. It offers real-time monitoring of power consumption, current, and voltage via a dedicated app, ensuring you stay on top of your energy usage. With built-in overload protection, it safeguards your devices by cutting power during anomalies. Remote one-tap control and voice compatibility with Alexa and Google Home make it a must-have for modern smart homes and professional setups aiming to optimize energy efficiency and safety.

## Description

Monitor power consumption, prevent overloads, and control high-powered devices remotely with this smart switch. Compatible with Alexa and Google Home for voice control.

Review: Amazing - Hooked this up to my immersion switch. Works great. Out of the box, installed, integrated with Alexa and all done and dusted in a couple of hours. A tradesman would be even quicker. I think I just caught the Sonoff bug!!!!!
Review: Be aware you may need a few additional parts - Instructions a bit thin... Ideally you need a 35mm DIN rail to mount it on and be aware you'll probably need to wire an earth connection (this switch is only wired with live and neutral connectors).

## Features

- 【25A/5500W Highest Output Power】POWR3 has the highest output power to make your high-powered devices smart, or as a single room-meter to measure power consumption.
- 【Measuring Power Consumption】Keep track of active power, current and voltage of your appliances on App
- 【Overload protection】Once an abnormality was detected, the power will be cut off to avoid device damage and danger.
- 【One-tap switch on/off remotely】POWR3 can cut off power wherever you are that can ensure the safety of your appliances and save on hidden electricity bills
- 【Voice Control】Compatible with desertcart Alexa and Google home. Just speak out your command, the smart device can do on/off as you say.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09B9QRXWK |
| Batteries required | No |
| Best Sellers Rank | 81,478 in DIY & Tools ( See Top 100 in DIY & Tools ) 35 in Power Monitors |
| Customer Reviews | 4.3 4.3 out of 5 stars (285) |
| Date First Available | 27 July 2021 |
| Item model number | POWR3 |
| Item weight | 220 Grams |
| Product Dimensions | 16.2 x 12.2 x 4.55 cm; 220 g |

## Product Details

- **Brand:** SONOFF
- **Connector type:** wireless
- **Contact type:** Normally Open
- **Current rating:** 100 Amps
- **Item dimensions L x W x H:** 16.2 x 12.2 x 4.5 centimetres
- **Material:** Polycarbonate
- **Operating voltage:** 230 Volts (AC)
- **Operation mode:** ON-NONE-OFF
- **Switch type:** Rocker
- **Terminal:** Physical

## Images

![High Power Smart Switch Power Meter Switch (POWR3) - Image 1](https://m.media-amazon.com/images/I/51uCcNLxyvL.jpg)

## Questions & Answers

**Q: Does this work with home assistant and sonoff zigbee dongle?**
A: This is not zigbee but will work with home assistant if flashed with tasmota

**Q: I would like to know if it is normal for the switch to get hot within the first 10-15 minutes of use.**
A: I’d say no, but then really depends how much current you’re passing through it.. my ones stay somewhat cool, room temp I’d say.

**Q: Does this have the option to connect the earth wire in UK circuits?**
A: No, but it’s not required, you can just join the earth together

**Q: Can this be used to monitor power cuts? IE, if the power to the device is lost, can the app notify you?**
A: Natively no, if there is a power cut this device will also stop functioning… since this is over Wi-Fi so would your internet ect and this the capability to see if it’s on or not… of course you could do it having a UPS and backup access to 4G (or similar) and some external monitoring tool.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing
*by A***Y on 8 July 2022*

Hooked this up to my immersion switch. Works great. Out of the box, installed, integrated with Alexa and all done and dusted in a couple of hours. A tradesman would be even quicker. I think I just caught the Sonoff bug!!!!!

### ⭐⭐⭐⭐ Be aware you may need a few additional parts
*by M***E on 30 November 2025*

Instructions a bit thin... Ideally you need a 35mm DIN rail to mount it on and be aware you'll probably need to wire an earth connection (this switch is only wired with live and neutral connectors).

### ⭐⭐⭐⭐⭐ Review
*by I***S on 25 March 2023*

Had tried several other Wi-Fi switches to control house LED lighting outside (switch in garage). After a few months they would fail. This is a little more expensive but MUCH better built and heavy duty. Easy to setup and worked flawlessly ever since. Highly recommend.

## Frequently Bought Together

- SONOFF High Power Smart Switch Power Meter Switch (POWR3)
- SONOFF Smart WiFi Light Switch 10A 2200W, Smart Switch Universal DIY Module for Smart Home Automation, Works with Alexa & Google Home, Compatible with eWelink IFTTT, No Hub Required, BASICR2, 2PCS

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/355186220-high-power-smart-switch-power-meter-switch-powr3](https://www.desertcart.sg/products/355186220-high-power-smart-switch-power-meter-switch-powr3)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-21*