---
product_id: 599607006
title: "Smart Immersion Heater Timer Switch,Smart Water Heater Timer Switch 20A 4000W,Works with Google Home Alexa and Smart Life APP Tuya, White, 20A, 4000W (45mm deep box)"
brand: "acmerota"
price: "R$585"
currency: BRL
in_stock: true
reviews_count: 8
category: "Acmerota"
url: https://www.desertcart.com.br/products/599607006-smart-immersion-heater-timer-switch-smart-water-heater-timer-switch
store_origin: BR
region: Brazil
---

# 20A high current rating Smart app & voice control Includes back box & screwdriver Smart Immersion Heater Timer Switch,Smart Water Heater Timer Switch 20A 4000W,Works with Google Home Alexa and Smart Life APP Tuya, White, 20A, 4000W (45mm deep box)

**Brand:** acmerota
**Price:** R$585
**Availability:** ✅ In Stock

## Summary

> 🔥 Smart heat, smart life — control your comfort with a tap or a word!

## Quick Answers

- **What is this?** Smart Immersion Heater Timer Switch,Smart Water Heater Timer Switch 20A 4000W,Works with Google Home Alexa and Smart Life APP Tuya, White, 20A, 4000W (45mm deep box) by acmerota
- **How much does it cost?** R$585 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/599607006-smart-immersion-heater-timer-switch-smart-water-heater-timer-switch)

## Best For

- acmerota enthusiasts

## Why This Product

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

## Key Features

- • **Powerful 20A Capacity:** Supports up to 4000W, ideal for high-demand water heating without compromise.
- • **Safe & Durable Design:** Tempered glass surface is waterproof, scratch-proof, and safe to touch even with wet hands.
- • **Effortless Smart Control:** Manage your immersion heater remotely via Alexa, Google Home, or Smart Life app for ultimate convenience.
- • **Energy-Saving Scheduling:** Set precise timers to optimize electricity use and never waste power heating water unnecessarily.
- • **Seamless Installation Kit:** Comes with a back box and screwdriver—get started immediately with no extra tools needed.

## Overview

The ACMEROTA 20A Smart Immersion Heater Timer Switch combines robust 20-amp power handling with seamless Wi-Fi connectivity, enabling remote and voice control via Alexa, Google Assistant, and Smart Life app. Designed for easy installation, it includes a back box and screwdriver, features a sleek tempered glass touch surface, and offers programmable timing to save energy and enhance your smart home experience.

## Description

Acmerota Smart Immersion Heater Timer Switch,Smart Water Heater Timer Switch 20A 4000W,Works with Google Home Alexa and Smart Life APP Tuya, White, 20A, 4000W (45mm deep box) : desertcart.co.uk: Business, Industry & Science

Review: Works perfectly - This is a sweet little switch, looks huge in the picture, but it's actually a standard size that fits the existing deep box that housed an auxiliary, and unrequired fuse holder I had fitted earlier, there's no real need for it as I have a brand new consumer unit with highly efficient circuit breakers, it comes with a matching deep box to use if one isn't already in place, you need to use a small screwdriverto split the glass front from the unit in order to screw it to the box, there is a plastic protector on the sensor in the center of the unit that I removed, I'm sure it's meant to be removed just before replacing the glass cover, though the pamphlet doesn't tell you to do that, I'm quite sure it's meant to be removed, I did so. I am a retired builder with some knowledge and experience in wireing in new sockets, switches etc, so I know what I'm doing, however if you are not confident in such things, and taking into account that your emersion heater may well be connected to a 30 amp supply, take extreme care, or call in a professional, though once in place clip the outer glass front back in on with a firm push, and with the power supply restored you're ready to go, all the steps necessary to connect to you router are in the pamphlet, good luck, you will wish you'd done it sooner, well worth the money, but be very careful.
Review: Works as described, but switching 40 A would be brave! - This Wifi switch enables me to control the immersion heater via the Alexa system. The set up using the SmartLife App and subsequent linking to Alexa was all straightforward. However the wiring of the control switch did need some care as the connector terminals are not that big (I certainly would not want to switch 40A with it though the 13A for an immersion heater is probably OK). There is no earth post so an extra connector block is required, squashing the whole lot into the rather flimsy back box also isn't that great. The face plate then clips on the front. However as others have noted it would be easy to snap the plastic clips. So overall it does what it claims well and does have a CE / UKCA logo on the packaging, but it doesn't have the build quality I would expect for UK electrical equipment. As for switching 40A - that's for the brave!

## Features

- THE PACKAGE COMES WITH A BACK BOX: The smart timer heater switch is easy to install. We include an installation back box and a screwdriver with the package. Start your installation immediately after receiving the package. You can choose to embed it into the wall or install it on the wall surface.
- SMART APP COMTROL: can be connected to desertcart Alexa & Google Assistant & Smartlife APP Tuya APP (for IOS/Android) only supports 2.4G Wfi. You can control the water heater anytime and anywhere when you are outside, and you can take a hot bath when you get home.
- VIOCE CONTROL: No need to get up, you can easily turn on the water heater with just one sentence to experience smart life
- SHARED CONTROL: You can transfer the control rights of the water heater to your family, and you can control the water heater with your family, which is more secure and worry-free.
- TIMING FUNCTION SAVES WORRY AND EFFORT: you can control the water heater regularly through the mobile APP, you can design the working time you need the water heater, and you can freely turn on and off the power to help you save electricity.
- LED BACKLINGHT: blue-red backlight to help you better identify the status of the water heater switch.
- TEMPERED GLASS SURFACE: It can be used as a normal safety touch switch even with wet hands. It is waterproof, moisture-proof, scratch-proof, oil-proof, easy to clean, safe and durable.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJXJLLVN |
| Actuator Type | Push Button |
| Best Sellers Rank | 14,795 in DIY & Tools ( See Top 100 in DIY & Tools ) 219 in Switches & Dimmers |
| Brand | ACMEROTA |
| Circuit Type | 1-way |
| Colour | White 20A |
| Connectivity Protocol | Wi-Fi |
| Connector Type | Screw In |
| Connector type | Screw In |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Control Method | App |
| Controller Type | Push Button |
| Country Of Origin | China |
| Current Rating | 20 Amps |
| Current rating | 20 Amps |
| Customer Reviews | 4.1 out of 5 stars 79 Reviews |
| Included Components | Switch |
| Item Dimensions | 8.6 x 8.6 x 3.5 centimetres |
| Item Type Name | WALL SWITCH |
| Item height | 35 millimetres |
| Manufacturer | ACMEROTA |
| Material | Glass |
| Model Number | HD-AC-055 |
| Mounting Type | Panel Mount, Surface Mount, Wall Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operating Voltage | 240 Volts |
| Operating voltage | 240 Volts |
| Operation Mode | ON-OFF |
| Operation mode | ON-OFF |
| Switch Type | Touch |
| Terminal | Screw |
| Unit Count | 1.0 Count |
| Wattage | 4000 watts |

## Product Details

- **Brand:** ACMEROTA
- **Connector type:** Screw In
- **Contact type:** Normally Open
- **Current rating:** 20 Amps
- **Item dimensions L x W x H:** 8.6 x 8.6 x 3.5 centimetres
- **Material:** Glass
- **Operating voltage:** 240 Volts
- **Operation mode:** ON-OFF
- **Switch type:** Touch
- **Terminal:** Screw

## Images

![Smart Immersion Heater Timer Switch,Smart Water Heater Timer Switch 20A 4000W,Works with Google Home Alexa and Smart Life APP Tuya, White, 20A, 4000W (45mm deep box) - Image 1](https://m.media-amazon.com/images/I/41ei-VcqWTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly
*by H***N on 27 October 2024*

This is a sweet little switch, looks huge in the picture, but it's actually a standard size that fits the existing deep box that housed an auxiliary, and unrequired fuse holder I had fitted earlier, there's no real need for it as I have a brand new consumer unit with highly efficient circuit breakers, it comes with a matching deep box to use if one isn't already in place, you need to use a small screwdriverto split the glass front from the unit in order to screw it to the box, there is a plastic protector on the sensor in the center of the unit that I removed, I'm sure it's meant to be removed just before replacing the glass cover, though the pamphlet doesn't tell you to do that, I'm quite sure it's meant to be removed, I did so. I am a retired builder with some knowledge and experience in wireing in new sockets, switches etc, so I know what I'm doing, however if you are not confident in such things, and taking into account that your emersion heater may well be connected to a 30 amp supply, take extreme care, or call in a professional, though once in place clip the outer glass front back in on with a firm push, and with the power supply restored you're ready to go, all the steps necessary to connect to you router are in the pamphlet, good luck, you will wish you'd done it sooner, well worth the money, but be very careful.

### ⭐⭐⭐⭐ Works as described, but switching 40 A would be brave!
*by F***Y on 18 January 2025*

This Wifi switch enables me to control the immersion heater via the Alexa system. The set up using the SmartLife App and subsequent linking to Alexa was all straightforward. However the wiring of the control switch did need some care as the connector terminals are not that big (I certainly would not want to switch 40A with it though the 13A for an immersion heater is probably OK). There is no earth post so an extra connector block is required, squashing the whole lot into the rather flimsy back box also isn't that great. The face plate then clips on the front. However as others have noted it would be easy to snap the plastic clips. So overall it does what it claims well and does have a CE / UKCA logo on the packaging, but it doesn't have the build quality I would expect for UK electrical equipment. As for switching 40A - that's for the brave!

### ⭐⭐⭐⭐⭐ East to fit and install
*by M***S on 21 May 2025*

Easy to install. But doesn't have an earth connection. Setting up in Tuya was very easy. Set the switch or discover mode and opened the Tuya app and it saw it straight away. Also, as soon as Tuya saw it so did Alexa. I've got my schedule in Alexa so all my smart home stuff is in one place. You need to know it doesn't setup on a 2.4/5ghz wifi. It only sets up in 2.4ghz. So for the initial setup, switch off your 5ghz, do the setup then switch on the 5ghz and it'll work.

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-20*