---
product_id: 550990022
title: "Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required"
brand: "yolink"
price: "€ 72.08"
currency: EUR
in_stock: true
reviews_count: 5
category: "Yo Link"
url: https://www.desertcart.at/products/550990022-smart-wireless-temperature-and-humidity-sensor-wide-temp-range-freezer
store_origin: AT
region: Austria
---

# LoRa wireless tech, ultra long-range 2+ years battery life, AAA included Wide temp range: 14°F to 140°F Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required

**Brand:** yolink
**Price:** € 72.08
**Availability:** ✅ In Stock

## Summary

> 🌍 Stay connected beyond WiFi limits—smart sensing redefined!

## Quick Answers

- **What is this?** Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required by yolink
- **How much does it cost?** € 72.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/550990022-smart-wireless-temperature-and-humidity-sensor-wide-temp-range-freezer)

## Best For

- yolink enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Power:** Includes 2 AAA batteries with 2+ years life, plus a hub that unlocks a growing smart ecosystem.
- • **Versatile Use Cases:** From fridges and freezers to barns, greenhouses, and pet cages—manage all your climate zones effortlessly.
- • **Precision Monitoring:** Fast 500ms response with high accuracy for temperature and humidity, perfect for sensitive environments.
- • **Unmatched Connectivity:** LoRa tech means zero WiFi congestion and extreme range—place sensors anywhere, indoors or out.
- • **Smart Alerts Everywhere:** Get instant push, email, SMS, and critical phone notifications—even in silent mode—so you never miss a beat.

## Overview

The YoLink Smart Wireless Temperature & Humidity Sensor leverages proprietary LoRa technology for ultra-long-range, low-power wireless monitoring. It covers a wide temperature range (14°F to 140°F) with rapid 500ms response and high accuracy. Designed for diverse environments—from freezers to greenhouses—it offers multi-channel alerts via app, email, SMS, and phone push notifications. Battery-powered with 2 AAA batteries included (lasting 2+ years), it requires a hub for full functionality and integrates with Alexa and IFTTT for smart home automation.

## Description

LORA > WIFI! YoLink devices do not use your WiFi, they do not crowd or bog down your WiFi network, but instead they use a unique LoRa-based extreme long-range and low-power wireless protocol unique to most of the smart home industry. Put smart devices where you never could before: outdoors*, several floors away, in fridges, gun safes, and locations well beyond normal WiFi range! *Consider one of our weatherproof sensors, designed for outdoor use MONITOR & MANAGE your temperature and humidity concerns, whether it's a fridge, a barn* or bedroom, a chicken coop or a dog kennel, a plant nursery or your child's nursery - anywhere! *Consider one of our weatherproof sensors, designed for outdoor use ECONOMICAL SMART FRIDGE! Save thousands when you make ANY fridge smart (or smarter) with YoLink smart sensors. Start with temperature sensors, then add door/lid sensors, leak sensors and a Power Fail Alarm. IFTTT & Alexa Integration: trigger IFTTT applets based on high or low temperature set points reached (when device alerts). Voice query Alexa for the temperature (only; humidity not supported at this time). Triggering Alexa routines is not supported at this time. KNOW NOW! You have many options for being notified of device activity! Receive a text, receive an email, receive a phone push notification (including Apple phone "Critical Alert" severe weather/Amber alert type notifications that will activate your phone even if in silent mode. Android phones offer similar functionality, depending on phone manufacturer). SMS messages are limited to the total of 5 times each device plus 5. A hub and one sensor provides you with 15 free SMS per month. HUB REQUIRED for full functionality, including for the app to work, but your hub is compatible with a growing family of smart products for home and business! YoLink devices do not use your WiFi, they do not crowd or bog down your WiFi network, but instead they use a unique LoRa-based extreme long-range and low-power wireless protocol unique to most of the smart home industry. Search for B09FSS95G9 for a SpeakerHub (our audio, talking hub) or B07TQLKQLJ for the original Hub. BATTERIES INCLUDED! Two AAA batteries, good for 2+ years, are included!

Review: Pig to set up! - The hub is an absolute pig to set up but once you have done then it’s a great piece of kit for ensuring that I’m notified if the freezer out in the garage fails. I’m using the other sensor to keep an eye on the temperature in the freezer in the house. * important to note that it will initially tell you that no internet has been found - just ignore it and carry on with the set up*
Review: Highly recommend - We have tested various devices for a few weeks. I have to say that we are very pleased. The first thing we noticed when unpackaging was that everything seem to be designed and made with attention to detail and care. That was a little surprising for us. Many times you get cheap packaging and apps that look like they were created in a single afternoon. Not so in this case. We had to double check to verify that this is a start up company. By all outward indications, it feels like it’s a well polished company that has been in business for quite some time. All manuals and set up information is available online. Do not expect much in the box. We had a little difficulty finding the information we needed at first but we were grateful, and still are, for the fast response from the company. Since we mentioned the company, we have to note that any kind of support request is answered promptly, even at odd hours of the night. That was surprising. But they have always been friendly and helpful, even when we should have checked product documentation first. The initial set up was a little challenging with Wi-Fi. But that is not due to product limitations. It is due to limitations on the wireless routers we used. The wireless routers we used did not allow us to separate the 2.4 GHz and 5 GHz networks. This system uses the 2.4 GHz network, which is needed in order to have the range. In the end, which simply hooked up the network hub to the router using the provided ethernet cable. Everything has been pretty much smooth sailing. Again. The system requires a 2.4 GHz Wi-Fi network. If you have trouble getting it to connect wirelessly, the issue is almost certainly your wireless router failing to separate the two networks or failing to allow the device onto the 2.4 GHz only. It’s not a product limitation or defect. Our recommendation is just to hook it up with the ethernet cable since the range is very long, anyway. Before using the system, we recommend updating the firmware on all devices manually. Depending upon how long it has been sitting in the desertcart warehouse, you may have an older version of firmware and might experience a few bugs. That was our case. We had a few problems with erroneous notifications that were rectified as soon as the firmware updated. The update, you find the firmware version in the device and tap it. The firmware does update automatically. But if it’s your first time setting up, it’s good to manually update the devices. We would love to see a way in the app to review the firmware status of all devices on one screen and manually trigger a firmware update for all devices from that same screen with a single click. But this is merely a want, not a flaw. Do not forget to edit the alarm strategy before you start using the system. It appears to default in the app to multiple strategies, which can mean getting an app notification, an email notification, and or text message notification each time something is opened or motion is detected. That might be something to look into on the app development side as far as prompting you during set up to choose your desired preferences. We have had no difficulties with the devices maintaining contact with the network hub. The network hub has reported itself going offline once or twice overnight, but this appears to be momentary and related to a firmware update automatically applying and automatically rebooting the device. Battery life so far appears to be really good. We are surprised by the quality of the 3M self adhesive tape on each one. There is no alcohol wipes provided, but we used simple rubbing alcohol and a cloth to clean the surfaces prior to sticking the devices on. You can do similar or just make sure that it’s really clean. As a test, we applied some of the devices to a surface that was not prepared/cleaned ahead of time. those devices have no problem sticking to the surface and have not fallen down. They appear to be well secured when we try to tug on them. We would love to see the adhesive strips offered as a replacement item for purchase. We can see down the road people moving devices around, say if they’ve changed their minds about location or if they move. We had also thought about having an extra mount for the motion sensor so we could move the motion sensor between different locations at different times. This was because we were only able to buy a limited quantity due to inventory at that time. But that is something that others might be interested in purchasing at a later date. The motion sensors have been updated to include sensitivity adjustment. They can be pretty sensitive, detecting slight movement even in the dark. We have no complaints. The range and spread appear to be great. The door/window sensor performs equally well. it can be mounted in virtually any orientation and still function so long as the sensor portion of each piece is within about 1/2 of an inch to the other. so you could even mount one of them at a 90° angle to the other. So long as they are within that distance to each other, they still function perfectly. We found this to be necessary with one door where we had a proper clearance on the door but did not have proper clearance on the frame. The products integrate seamlessly with IFTTT. We would love if the temperature/humidity sensor had the option to show more frequently than one hour on the history graph in the app. But the graph is clean, uncluttered and easy to read. We will soon be testing additional products. We are adding additional door sensors and motion sensors to the system, which will then have approximately 20 devices connected. We are also going to be testing for the first time the garage door motion sensor (ordered). We were originally going to test the motion sensor/ garage door opener combo, but none of the garage door openers we have available appear to be compatible. Afterwards, we will test additional devices on our “wish list.“ We have found zero indication of user data tracking, analytics tracking, or communication with ad servers on the app. It really does appear to be simply designed to do what it is supposed to do and nothing more. It’s refreshing. So to summarize, we can’t really find anything wrong. We have struggled to find anything to critique with the devices or the app. Everything works as intended and we are extremely pleased.

## Features

- LORA > WIFI! YoLink devices do not use your WiFi, they do not crowd or bog down your WiFi network, but instead they use a unique LoRa-based extreme long-range and low-power wireless protocol unique to most of the smart home industry. Put smart devices where you never could before: outdoors*, several floors away, in fridges, gun safes, and locations well beyond normal WiFi range! *Consider one of our weatherproof sensors, designed for outdoor use
- MONITOR & MANAGE your temperature and humidity concerns, whether it's a fridge, a barn* or bedroom, a chicken coop or a dog kennel, a plant nursery or your child's nursery - anywhere! *Consider one of our weatherproof sensors, designed for outdoor use
- ECONOMICAL SMART FRIDGE! Save thousands when you make ANY fridge smart (or smarter) with YoLink smart sensors. Start with temperature sensors, then add door/lid sensors, leak sensors and a Power Fail Alarm.
- IFTTT & Alexa Integration: trigger IFTTT applets based on high or low temperature set points reached (when device alerts). Voice query Alexa for the temperature (only; humidity not supported at this time). Triggering Alexa routines is not supported at this time.
- KNOW NOW! You have many options for being notified of device activity! Receive a text, receive an email, receive a phone push notification (including Apple phone "Critical Alert" severe weather/Amber alert type notifications that will activate your phone even if in silent mode. Android phones offer similar functionality, depending on phone manufacturer). SMS messages are limited to the total of 5 times each device plus 5. A hub and one sensor provides you with 15 free SMS per month.
- HUB REQUIRED for full functionality, including for the app to work, but your hub is compatible with a growing family of smart products for home and business! YoLink devices do not use your WiFi, they do not crowd or bog down your WiFi network, but instead they use a unique LoRa-based extreme long-range and low-power wireless protocol unique to most of the smart home industry. Search for B09FSS95G9 for a SpeakerHub (our audio, talking hub) or B07TQLKQLJ for the original Hub.
- BATTERIES INCLUDED! Two AAA batteries, good for 2+ years, are included!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B085HTZRRR |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Brand | YoLink |
| Brand Name | YoLink |
| Colour | White |
| Connectivity Technology | LoRa |
| Country of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 1,632 Reviews |
| Display Type | Digital |
| Importer Contact Information | Shop The World B112 Virwani Industrial estate Western Express Highway Goregaon east Mumbai 400063 Email care@shoptheworld.in www.shoptheworld.in WhatsApp no +919820168421 |
| Included Components | 2 x AAA batteries, mounting bracket (derived) |
| Indoor Outdoor Usage | Outdoor |
| Inner Material | Plastic |
| Item Length | 6.3 Centimetres |
| Lower Temperature Rating | 14 Degrees Fahrenheit |
| Manufacturer | YoSmart |
| Model Name | Smart thermometer and hygrometer |
| Model Number | YS8003 |
| Number of Batteries | 2 AAA batteries required. (included) |
| Outer Material | Plastic |
| Outer Material Type | Plastic |
| Packer Contact Information | Shop The World B112 Virwani Industrial estate Western Express Highway Goregaon east Mumbai 400063 Email care@shoptheworld.in www.shoptheworld.in WhatsApp no +919820168421 |
| Part Number | YS8003 |
| Power Source Type | Battery Powered |
| Product Care Instructions | Freezer Safe |
| Response Time | 500 Milliseconds |
| Reusability | Single Use |
| Special Feature | Fast Reading System, High Accuracy |
| Special Features | Fast Reading System, High Accuracy |
| Specification Met | RoHS |
| Style Name | Contemporary |
| UPC | 750258361841 850024791442 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 140 Degrees Fahrenheit |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** YoLink
- **Colour:** White
- **Included Components:** 2 x AAA batteries, mounting bracket (derived)
- **Special Feature:** Fast Reading System, High Accuracy

## Images

![Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required - Image 1](https://m.media-amazon.com/images/I/61fhWpqwd+L.jpg)
![Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required - Image 2](https://m.media-amazon.com/images/I/71pT8nwP0dL.jpg)
![Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required - Image 3](https://m.media-amazon.com/images/I/61Fe-1k5bFL.jpg)
![Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required - Image 4](https://m.media-amazon.com/images/I/61pUgl9jRPL.jpg)
![Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required - Image 5](https://m.media-amazon.com/images/I/71dKnd2KajL.jpg)

## Questions & Answers

**Q: Can you have more than one temp/humidity sensor in the same house running on the hub and app?**
A: Yes, You can. One Yolink hub can support more than 200 YoLink devices in real test. YoLink Hub covers more than 300 feet indoor and 1000 feet in the open air. Normally one hub is enough for one house.
Hope this answer is helpful to you

**Q: How often does the sensor check the temp and humidity for automation?  Is the sensor only checked after a certain number of minutes?**
A: The sensor updates the app each hour, minimum, but also updates if any of the following occur:

At least 0.9 F degree change over a period longer than 1 minute

At least 3.6 F degree change within 1 minute

At least 5% humidity changes over a period longer than 1 minute

The device reaches a pre-set high or low alert level (set by the user)

Or the SET button on the device has been pressed

**Q: Does this work with smartthings and do i need the yolink hub?**
A: Sorry, YoLink system is not compatible with smarrthings now, YoLink uses LoRa protocol and YoLink Hub is required. Thanks!

**Q: I see the YoLink hub is required for all smart features.  Is there an alternate way to just connect wifi and monitor from ios without the hub?**
A: No, YoLink hub is required. YoLink smart devices use a special wireless technology based on LoRa, which can offer extreme long range (1000 feet compared to 100 for WiFi, outdoors, line-of-sight) and superior obstruction penetration including concrete and metal, but they do not use your WiFi. They need to wirelessly connect to one of our hubs. Thanks!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pig to set up!
*by J***S on 11 September 2024*

The hub is an absolute pig to set up but once you have done then it’s a great piece of kit for ensuring that I’m notified if the freezer out in the garage fails. I’m using the other sensor to keep an eye on the temperature in the freezer in the house. * important to note that it will initially tell you that no internet has been found - just ignore it and carry on with the set up*

### ⭐⭐⭐⭐⭐ Highly recommend
*by N***L on 17 October 2020*

We have tested various devices for a few weeks. I have to say that we are very pleased. The first thing we noticed when unpackaging was that everything seem to be designed and made with attention to detail and care. That was a little surprising for us. Many times you get cheap packaging and apps that look like they were created in a single afternoon. Not so in this case. We had to double check to verify that this is a start up company. By all outward indications, it feels like it’s a well polished company that has been in business for quite some time. All manuals and set up information is available online. Do not expect much in the box. We had a little difficulty finding the information we needed at first but we were grateful, and still are, for the fast response from the company. Since we mentioned the company, we have to note that any kind of support request is answered promptly, even at odd hours of the night. That was surprising. But they have always been friendly and helpful, even when we should have checked product documentation first. The initial set up was a little challenging with Wi-Fi. But that is not due to product limitations. It is due to limitations on the wireless routers we used. The wireless routers we used did not allow us to separate the 2.4 GHz and 5 GHz networks. This system uses the 2.4 GHz network, which is needed in order to have the range. In the end, which simply hooked up the network hub to the router using the provided ethernet cable. Everything has been pretty much smooth sailing. Again. The system requires a 2.4 GHz Wi-Fi network. If you have trouble getting it to connect wirelessly, the issue is almost certainly your wireless router failing to separate the two networks or failing to allow the device onto the 2.4 GHz only. It’s not a product limitation or defect. Our recommendation is just to hook it up with the ethernet cable since the range is very long, anyway. Before using the system, we recommend updating the firmware on all devices manually. Depending upon how long it has been sitting in the Amazon warehouse, you may have an older version of firmware and might experience a few bugs. That was our case. We had a few problems with erroneous notifications that were rectified as soon as the firmware updated. The update, you find the firmware version in the device and tap it. The firmware does update automatically. But if it’s your first time setting up, it’s good to manually update the devices. We would love to see a way in the app to review the firmware status of all devices on one screen and manually trigger a firmware update for all devices from that same screen with a single click. But this is merely a want, not a flaw. Do not forget to edit the alarm strategy before you start using the system. It appears to default in the app to multiple strategies, which can mean getting an app notification, an email notification, and or text message notification each time something is opened or motion is detected. That might be something to look into on the app development side as far as prompting you during set up to choose your desired preferences. We have had no difficulties with the devices maintaining contact with the network hub. The network hub has reported itself going offline once or twice overnight, but this appears to be momentary and related to a firmware update automatically applying and automatically rebooting the device. Battery life so far appears to be really good. We are surprised by the quality of the 3M self adhesive tape on each one. There is no alcohol wipes provided, but we used simple rubbing alcohol and a cloth to clean the surfaces prior to sticking the devices on. You can do similar or just make sure that it’s really clean. As a test, we applied some of the devices to a surface that was not prepared/cleaned ahead of time. those devices have no problem sticking to the surface and have not fallen down. They appear to be well secured when we try to tug on them. We would love to see the adhesive strips offered as a replacement item for purchase. We can see down the road people moving devices around, say if they’ve changed their minds about location or if they move. We had also thought about having an extra mount for the motion sensor so we could move the motion sensor between different locations at different times. This was because we were only able to buy a limited quantity due to inventory at that time. But that is something that others might be interested in purchasing at a later date. The motion sensors have been updated to include sensitivity adjustment. They can be pretty sensitive, detecting slight movement even in the dark. We have no complaints. The range and spread appear to be great. The door/window sensor performs equally well. it can be mounted in virtually any orientation and still function so long as the sensor portion of each piece is within about 1/2 of an inch to the other. so you could even mount one of them at a 90° angle to the other. So long as they are within that distance to each other, they still function perfectly. We found this to be necessary with one door where we had a proper clearance on the door but did not have proper clearance on the frame. The products integrate seamlessly with IFTTT. We would love if the temperature/humidity sensor had the option to show more frequently than one hour on the history graph in the app. But the graph is clean, uncluttered and easy to read. We will soon be testing additional products. We are adding additional door sensors and motion sensors to the system, which will then have approximately 20 devices connected. We are also going to be testing for the first time the garage door motion sensor (ordered). We were originally going to test the motion sensor/ garage door opener combo, but none of the garage door openers we have available appear to be compatible. Afterwards, we will test additional devices on our “wish list.“ We have found zero indication of user data tracking, analytics tracking, or communication with ad servers on the app. It really does appear to be simply designed to do what it is supposed to do and nothing more. It’s refreshing. So to summarize, we can’t really find anything wrong. We have struggled to find anything to critique with the devices or the app. Everything works as intended and we are extremely pleased.

### ⭐⭐⭐⭐⭐ Simplicity and excellent value for home monitoring!
*by T***T on 31 March 2021*

I was looking for a system to monitor my home while I was away. After doing hours of research I selected the YoLink solution because, for my needs, it offered the best combination of available functionality and simplicity/reliability. The system connects to the internet using a small hub device. The *many* available monitors and sensors connect wirelessly to the hub using LoRa wireless technology, The LoRa wireless operates on a different frequency than home wifi and offers greater range. It easily penetrates walls and floors. All of my monitor/sensor wireless connections located in 3 levels of my home and garage are rock-solid. Setup is unbelievably simple. First install the phone app. Then setup the hub which can be connected to your home network wireless or hard wired. To add devices to the system, simply scan the QR code label on each sensor using the app and it will be added to your home's system. That's it! I am currently using this for temperature/humidity monitoring, water leak detection and garage door (open-closed) status right out of the box. I haven't yet tried "programming" which can add additional functionality. Using the app's notification features I can get alerts,etc on my phone and even on my Apple watch over the cellular network. I get all of this for a reasonable price. BTW, for video monitoring, I use Blink cameras. Using both systems is not cumbersome or inconvenient.

## Frequently Bought Together

- YoLink Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Freezer, Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required
- YoLink 2-Pack X3 Version Temperature Humidity Data Logger, Longest Wireless Range, 5+ Years Battery, Emails/Text/App Alerts, Alexa, Best Freezer, Greenhouse Monitor. Hub Included
- YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4 with 105dB Audio Alarm 4-Pack, SMS/Text, Email & Push Notifications, Freeze Warning, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-06-09*