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Who We Are
YoLink, a brand of YoSmart, was founded in 2014 in Irvine, California, by a team of local engineers. We were the first to apply LoRa technology to smart homes, bringing ultra-long-range and low-power performance into everyday living. With over 300,000 gateways and 2M+ devices online, YoLink delivers exceptional battery life through our patented Radio Wake-Up technology, while D2D (Device-to-Device) Control ensures essential leak-to-shutoff actions work instantly-even without internet or power.
Why We're Different
Smarter: YoLink smart lighting automates your homes with schedules, scenes, and voice control, while consuming minimal energy.
Safer: Lights can be triggered by motion or door sensors via D2D Control, ensuring lights turn on instantly-even without internet.
Farther: With LoRa, YoLink lighting devices maintain reliable coverage up to 1/4 mile, making them ideal for large homes, garages, and outdoor areas.
Additional Applications
Compare our Temperature and Humidity Sensors
Compare Temperature Sensors
Just need temperature? Check out our temperature sensor solutions.
Operating Temperature
Sensor body:
-22°F-140°F (-30°C-60°C)
Cable Probe:
-40°F-221°F (-40°C-105°C
Sensor body:
-22°F-140°F (-30°C-60°C)
Cable Probe:
-40°F-221°F (-40°C-105°C)
Outdoor Rated (IP Rating)
IP65 Waterproof
Battery Life (Years)
2
5
Battery Type
2 AAA Lithium
2 AA Lithium
Mounting Options
Lanyard/Wall Opt. Bracket
Wall/Magnet
Offline Data Store & Sync
Yes
Cable Length Ft (Meters)
3.38' (0.99m)
3.38' (0.99m)
Hassle-Free Refunds
Return within 30 days for a full refund
2-Year Warranty
Have peace of mind with YoLink warranty
Easy DIY Installation
Simple and clear do-it-yourself installation
Lifelong Customer Support
Get dedicated support for your product
What Our Customers Think!
Get it!
"We’ve had the freezer go out before and had to throw away a lot of meat. Now i get a notification if it starts to get warm and can check it out to prevent and issue. Also gives me reassurance during a power outage it didn’t get too warm in the freezer!! Highly recommend. Good value for the peace of mind."
B. Boston
A bit bigger than I expected, but works really well
"I have 18 YoLink devices/sensors at my house. I love the system and all the various sensors it supports. Everything is very long range RF that has no problem going through exterior and interior walls and floors...You can get temp and humidity readings on the app, and some very handy graphs of how temperature changes over time. You can see low/high/average temperatures and lots of historical data. I'm a data geek - I love knowing all about things. You need the inexpensive hub and just one sensor to get started... You can name all sensors - I use their actual locations in the house/yard so I can instantly see where the problem is. I have two outside sensors - one on the mailbox, the other on a gate. Works over the Internet, not just local wi-fi...Highly recommended if you need such measurements. All the YoLink sensors I have (all 18 of them) have been reliable and consistent. The water sensors have saved me twice now from potentially expensive water leaks (80 year old plumbing). The app even shows battery levels for every sensor. Just magical."
Blue
Works great!
"Bought to interface with my other YoLink stuff which all work great. My neighbor goes down south for a few months a year in the winter and after having some furnace issues, was worried about his furnace crapping out when he was gone. His house is about 300 yards away, so I got this to throw in his house and alert me if the temp dropped below 50F. If it did, I’d let him know and he could call his HVAC guy to fix it while he was out of town. He doesn’t have internet in his house, but I do, so being able to tie this into my hub and use my internet was great. Had great signal at 300 yards plus going through a garage and a few interior walls...They use Li ion AA batteries, so when the originals eventually do die, replace them with the same. Alkaline batteries won’t last as long, especially if the sensors are outside during weather shifts. My driveway sensor has been alive for over two years on the original batteries and it alerts about 10 times a day because the turkey and deer seem to enjoy hanging out at the tree it’s mounted to…"
Dr. Awesome