---
product_id: 599607006
title: "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)"
brand: "acmerota"
price: "$101"
currency: NZD
in_stock: null
reviews_count: 9
category: "Acmerota"
url: https://www.desertcart.nz/products/599607006-acmerota-smart-immersion-heater-timer-switch-smart-water-heater-timer
store_origin: NZ
region: New Zealand
---

# Customizable timer for energy savings 20A high current capacity Smart app control via Alexa, Google Home & Tuya 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)

**Brand:** acmerota
**Price:** $101
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Turn up the heat on smart living with effortless control! 📲

## Quick Answers

- **What is this?** 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) by acmerota
- **How much does it cost?** $101 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/599607006-acmerota-smart-immersion-heater-timer-switch-smart-water-heater-timer)

## 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

- • **Family-Shared Access:** Easily share control with household members for secure, worry-free management of your water heating system.
- • **Safe & Durable Design:** Tempered glass surface is waterproof, scratch-proof, and safe to touch even with wet hands—built for modern lifestyles.
- • **Effortless Smart Control:** Manage your water heater remotely with Alexa, Google Home, or Smart Life app—never come home to cold water again.
- • **Precision Energy Savings:** Set custom schedules to optimize heater usage and slash your electricity bills without lifting a finger.
- • **Seamless Installation Kit:** Includes a back box and screwdriver for quick, professional-grade setup—no extra trips to the hardware store.

## Overview

The Acmerota Smart Immersion Heater Timer Switch is a 20A, 4000W smart switch designed for seamless integration with Alexa, Google Home, and the Tuya Smart Life app. It features a durable tempered glass touch surface, customizable timer functions for energy efficiency, and comes with an installation back box and screwdriver for easy setup. Perfect for millennial professionals seeking smart home convenience and energy savings.

## 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 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 11,885 in DIY & Tools ( See Top 100 in DIY & Tools ) 155 in Switches & Dimmers |
| Colour | White 20A |
| Customer Reviews | 4.1 4.1 out of 5 stars (78) |
| Date First Available | 27 Sept. 2023 |
| Included components | Switch |
| Item Package Quantity | 1 |
| Item Weight | 250 g |
| Item model number | HD-AC-055 |
| Manufacturer | ACMEROTA |
| Part number | HD-AC-055 |
| Plug profile | Panel Mount, Surface Mount, Wall Mount |
| Product Dimensions | 8.6 x 8.6 x 3.5 cm; 250 g |
| Switch Type | 1-way |
| 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

![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) - Image 1](https://m.media-amazon.com/images/I/21Pyz7nQbpL.jpg)
![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) - Image 2](https://m.media-amazon.com/images/I/410mNbR9jsL.jpg)
![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) - Image 3](https://m.media-amazon.com/images/I/4153oWV88AL.jpg)
![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) - Image 4](https://m.media-amazon.com/images/I/41JizCn2VtL.jpg)
![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) - Image 5](https://m.media-amazon.com/images/I/41Nwoes+5gL.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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-22*