Smart Wireless Temperature/Humidity Sensor Wide Range for Freezer Fridge Monitoring Pet Cage/Tank Monitoring, App Alerts, Text/SMS, Email Alerts, Compatible with Alexa IFTTT, 2 Pack - Hub Included
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Availability:
Only 1 left in stock, order soon!
Arrives
Friday, Aug 29
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Style: 2-Pack with Hub
Features
- DON'T TRY THIS WITH WiFi! Our unique LoRa-based sensors are different from WiFi, Zigbee, Z-Wave and most other wireless smart sensors in that they are extreme long-range (up to 1/4 mile open-air), low-power (years between battery changes), and work outdoors*, on other floors, and even in a metal box (like a fridge or mailbox)!
- 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.
- PLUG, PLUG & PLAY! Take advantage of direct ethernet connection and be online almost instantly when you plug your Hub into your router or network switch. Or, use hot spot mode to connect to your WiFi network in moments. Add devices in seconds using our Scan & Play QR code scanner in the app! Set your notification preferences, test your new sensors, then enjoy years of trouble-free operation!
- 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 two sensors provides you with 20 free SMS per month.
Brand: YoLink
Special Feature: Temperature Display, Motion Sensor
Color: White
Age Range (Description): Child
Included Components: 1 x YoLink Hub, 2 x YoLink Temperature & Humidity Sensor
Outer Material: Metal
Display Type: Digital
Connectivity Technology: Ethernet
Product Care Instructions: Freezer Safe, Wipe Clean
Unit Count: 2.0 Count
Package Dimensions : 7.17 x 6.38 x 1.22 inches; 13.44 ounces
Item model number : YS1603-UC+YS8003-UC*2
Batteries : 4 AAA batteries required. (included)
Date First Available : September 22, 2020
Manufacturer : YoSmart
Country of Origin : China
Best Sellers Rank: #13,841 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #3 in Home Automation Modules
#3 in Home Automation Modules:
Customer Reviews: 4.5 4.5 out of 5 stars 3,855 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Aug 29
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 1-Pack with Hub
Setup: Setup could not be easier. 1. Install app, 2. setup hub 3. add sensor(s). 4. Update Firmware. To make the hub setup quick and easy it's best to connect the hub to your router with an ethernet cable. The instructions have you scan a barcode on the hub using the app to register it, then power it up. It came online within a few seconds. WiFi can then be setup while it is connected via ethernet cable. If you wish to use WiFi power off and relocate the hub. It takes about 30 seconds to join WiFi after being powered up. Adding the sensor(s) is similar. Scan the barcode on the device with the app, then turn it on using a switch on the back of the unit. It will connect to the hub quickly. It is best to configure all the alerts and other settings while you have the sensor on a desk, then when the configuration is complete place the sensor where it is needed. Both the hub and sensor had the latest firmware as delivered which is awesome. Use: The LCD's still work even at freezer temperatures of -5f. The batteries in the LCD sensors will not last very long in a freezer. maybe 9 months, I have ordered some sensors that do not have an LCD and come with Lithium batteries good for 5 years. I'm really impressed how well the sensors work inside a freezer clear the other side of the house from the hub. It lives up to the hype. Sensors contact the hub about once per minute. App: The app is very good, there are some really detailed statistics you can view and there is an option to download data. I have included a screen shot of one of the charts showing a 24 hour view, Alerts: After setting thresholds, alerts can be sent via the app on your phone, an email, or SMS. SMS is limited to 15 SMS's per month but email works just fine and has no limit. Yolink Eco system: The number and variety of devices you can add to the hub is impressive. Given how easily the system and app works I'll be adding devices in the future. Highly recommended.
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Reviewed in the United States on December 29, 2024 by JP JP
Style: 2-Pack with Hub
Installed in 2 freezers. EZ setup, reliable, have worked as designed for >18mos. Also added the Yolink leak detector to my system, which I placed on cellar floor. Peace of mind, knowing that I will receive an alert to my phone if my freezers fail or my cellar floods, is well worth the price and effort to put this YoLink system in service. Recommended.
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Reviewed in the United States on July 13, 2025 by Bob
Style: 2-Pack with Hub
I bought these to keep track of our garage freezer temps and our basement freezer temps in the event our power goes out or someone doesn't close the door all the way. They have worked well and keep me informed when the temps reach a certain degree. Easy set up and can be monitored on your phone from anywhere.
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Reviewed in the United States on June 19, 2025 by Elizabeth
Style: 2-Pack with Hub
The media could not be loaded. I bought these back in January 2022 and set one up for use in our new chest freezer and the other I put in my home office. The unit is inside the freezer and reports data perfectly to the network equipment. I most impressed that with an average temperature of -0.2f and being installed inside that it can work properly. It's a winner! April 2, 2022 Recently the power went out for a few hours on Friday afternoon. Unknown to me that the freezer GFCI tripped and the power was disconnected from the freezer. I received several alerts over night about the humidity increasing above my set point. The freezer wasn't running! And the temperature was sloooowly rising and at almost 20 degrees. Two things about this situation. 1. The Yolink works well and reporting is timely. 2. My freezer only increased 20 degrees in 21 hours! I reset the GFCI and the freezer is running properly now. In under an hour the Yolink reports the temperature is falling steadily and is at 12 degrees with the humidity falling to 54%. Should be back to 0 +/- a couple of degrees in another 40 minutes. Great freezer and Yolink saves the day! Apologies for the crappy video. ---===UPDATE===--- July 30th 2022 Still loving this sensor! My thoughts after 7 months of use... Works flawlessly and continually reports temperature and humidity that is out of range. My only fault with this device is that I received no, (read, ZERO) alerts that the batteries had died or reached a low voltage level in the sensor in my chest freezer. I discovered today that the batteries were dead. I will now be setting a reminder alert on my phone to replace batteries in 5-6 months. On another note, it's amazing that the batteries (factory installed AAA alkaline) lasted 6 months in temperatures in the 0-5 degrees F. Also, I did not have to re-pair or reconfigure the sensor. Slap some fresh batteries into the device and powered up immediately and instantly received a text message on my phone saying that the humidity was high and temperature was out of my designated safe range. A NOTE TO YoLink: Please upgrade the device to send alert when battery life is near it's end.
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Reviewed in the United States on April 2, 2022 by CompuTech007 CompuTech007
Style: 2-Pack with Hub
Previously I've searched for freezer monitors after a freezer full of food died. And the built-in alarm died with it. Well, this connects the sensors on something else, not Wifi or BT, into a tiny hub that just into any router. You download a fast smartphone app, and then scan a qr code on each device. They configure themselves! You can set temperature range alarms, and get alerts by SMS and email to your devices. And the system can add home alarms, more sensors, alarm sirens, all sorts of things. The LCD readout on each sensor can be read by itself, and the displays don't crack or freeze. You get to read a temp and humidity chart for each sensor. You can see how self-defrost really changes the temperature, and proof that a FULL freezer keeps a much steadier temperature. I'm in love with this thing. So simple to set up (if you look at the instructions) and such great information and performance. I'd actually give it SIX STARS if I could, and I'm a hard customer to please.
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Reviewed in the United States on September 1, 2023 by Some Amazon Customer