---
product_id: 532326848
title: "Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App | No Hub | Digital Sensor"
brand: "shelly"
price: "HK$220"
currency: HKD
in_stock: true
reviews_count: 13
category: "Shelly"
url: https://www.desertcart.hk/products/532326848-plus-add-on-wi-fi-and-bluetooth-add-on-shelly
store_origin: HK
region: Hong Kong
---

# Compatible with DHT22 humidity sensor Wi-Fi & Bluetooth dual connectivity Supports up to 5 DS18B20 temp sensors Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App | No Hub | Digital Sensor

**Brand:** shelly
**Price:** HK$220
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate your smart home game with precision sensing and effortless control!

## Quick Answers

- **What is this?** Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App | No Hub | Digital Sensor by shelly
- **How much does it cost?** HK$220 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/532326848-plus-add-on-wi-fi-and-bluetooth-add-on-shelly)

## Best For

- shelly enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Supports analog & digital inputs, perfect for Arduino sensors and custom DIY projects.
- • **Hub-Free Smart Automation:** Works directly with Alexa & Google Home—no extra hub needed for effortless setup.
- • **Dynamic Irrigation Control:** Automate watering only when your soil needs it, saving water and money with smart triggers.
- • **Remote Monitoring & Alerts:** Manage your home environment from anywhere with the intuitive Shelly app on iOS and Android.
- • **Seamless Multi-Sensor Integration:** Connect up to five temperature probes or a humidity sensor for precise environmental control.

## Overview

The Shelly Plus Add-On is a compact Wi-Fi and Bluetooth-enabled sensor module designed to extend Shelly Plus devices with temperature and humidity monitoring. Supporting up to five DS18B20 temperature sensors or one DHT22 humidity sensor, it enables smart automation like irrigation control and environmental monitoring without requiring a hub. Compatible with Alexa, Google Home, and Arduino sensors, it offers flexible, remote management via the Shelly app, backed by a 3-year warranty.

## Description

Shelly Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App | No Hub | Digital Sensor: desertcart.com: Industrial & Scientific

Review: Little device with a lot of capabilities - I got this to add on to my Shelly Plus One and it was super simple to add. Just click it in place, and connect a temperature probe the provided terminals. You just need to go to the Shelly Plus One's web UI to enable this, and it'll be off and running. Pretty easy (and cost effective) way to extend a Plus One to have temperature and humidity sensors.
Review: Easy Smart Thermostat Alternative For Any DIY Enthusiast - I've been using Shelly devices for several years and have been consistently impressed. These add-ons are fantastic! I have one currently controlling my 240V, 3000W electric space heater. It's configured with one leg of the 240V connection (at 120V) running through the relay, which also powers the Shelly 1. This add-on is connected to a standard DS18B20 temperature probe. Using Shelly's virtual thermostat feature with this add-on, I can precisely control my shop's temperature from anywhere with an internet connection via the Shelly app. I also have another one of these units controlling an exhaust fan in a grow room, connected to a DHT20 temperature and humidity sensor. Both add-ons have been working flawlessly. You can use these devices with a variety of sensors, including soil temperature/moisture sensors, and they can be powered by DC as well. This adds tremendous value to Shelly Plus devices! I highly recommend these add-ons for any home automation project. They are easy to configure and use. In the future, I plan to add a display unit and an OpenHab server to create custom widgets showing the temperature and other metrics all in a nice wall display.

## Features

- Shelly Plus Add-On is a Wi-Fi gadget for all your Shelly Plus devices, Can be used with up to five DS18B20 (temperature) sensors or one DHT22 (humidity) sensor, the device has an analog and a digital input and is compatible with most Arduino sensors.
- Irrigation only when needed - Having a beautiful garden is not an easy task and automating your irrigation system can save you time and optimize your costs. Together with a soil moisture sensor, Shelly Plus Add-on can trigger Shelly Plus 1 to turn on the irrigation only when necessary, always skipping the rainy days.
- Control All Your Shelly Plus Devices - Using the Shelly Plus Add-on and two DS18B20 sensors, you can easily measure the precise temperature inside your aquarium. Shelly Plus Add-on with a rain sensor can trigger Shelly Plus 2PM to open the awning just in time to protect your guests and many other combinations that can make you comfortable at your home.
- Shelly Customer Service - Shelly is one of the fastest-growing Smart Home brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 3 years device warranty.
- Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BRBMKB53 |
| Best Sellers Rank | #24,636 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #18 in Automatic Irrigation Controllers |
| Brand | Shelly |
| Date First Available | May 18, 2023 |
| Global Trade Identification Number | 03800235266427 |
| Item Weight | 0.459 ounces |
| Item dimensions L x W x H | 1.46 x 1.65 x 1.46 inches |
| Item model number | 3800235266427 |
| Language | English |
| Manufacturer | Allterco Robotics EOOD |
| Material | Plastic |
| Measurement Accuracy | Better than ±15% |
| Mounting Type | Flush Mount |
| Output Type | Digital |
| Product Dimensions | 1.46 x 1.65 x 1.46 inches |
| Smart Home Compatibility | Smart Home Compatible |
| Specific Uses For Product | Light Sensitive Control, Motion-Controlled Lights, Smart Irrigation, Weather-Sensitive Awning, Garage Door position control |
| Style | Modern |
| Upper Temperature Rating | 105 Degrees Fahrenheit |

## Product Details

- **Brand:** Shelly
- **Item Weight:** 13 Grams
- **Item dimensions L x W x H:** 1.46 x 1.65 x 1.46 inches
- **Material:** Plastic
- **Style:** Modern

## Images

![Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App | No Hub | Digital Sensor - Image 1](https://m.media-amazon.com/images/I/81WwVQX0FrL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Little device with a lot of capabilities
*by P***S on January 25, 2026*

I got this to add on to my Shelly Plus One and it was super simple to add. Just click it in place, and connect a temperature probe the provided terminals. You just need to go to the Shelly Plus One's web UI to enable this, and it'll be off and running. Pretty easy (and cost effective) way to extend a Plus One to have temperature and humidity sensors.

### ⭐⭐⭐⭐⭐ Easy Smart Thermostat Alternative For Any DIY Enthusiast
*by J***G on January 23, 2025*

I've been using Shelly devices for several years and have been consistently impressed. These add-ons are fantastic! I have one currently controlling my 240V, 3000W electric space heater. It's configured with one leg of the 240V connection (at 120V) running through the relay, which also powers the Shelly 1. This add-on is connected to a standard DS18B20 temperature probe. Using Shelly's virtual thermostat feature with this add-on, I can precisely control my shop's temperature from anywhere with an internet connection via the Shelly app. I also have another one of these units controlling an exhaust fan in a grow room, connected to a DHT20 temperature and humidity sensor. Both add-ons have been working flawlessly. You can use these devices with a variety of sensors, including soil temperature/moisture sensors, and they can be powered by DC as well. This adds tremendous value to Shelly Plus devices! I highly recommend these add-ons for any home automation project. They are easy to configure and use. In the future, I plan to add a display unit and an OpenHab server to create custom widgets showing the temperature and other metrics all in a nice wall display.

### ⭐⭐⭐⭐⭐ Sensors
*by A***A on February 3, 2026*

Excellent to add temperature sensors and analog and digital inputs to a Shelly relay. I'm using it to control a fridge, several temperature sensors inside the cabinet and a variable resistor to set the desired temperature without using an app

## Frequently Bought Together

- Shelly Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App |No Hub | Digital Sensor
- Shelly Plus 1 UL | WiFi Smart Relay Switch with Dry Contacts | Home Automation | Bluetooth Gateway | Alexa, SmartThings & Google Home Compatible | No Hub | DIY Remote Control | Garage Door Opener

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-28*