YoLink Smart Wireless Temperature & Humidity Sensor, Wide Temp Range (-22 to 158 Degree) for Freezer, Fridge, Green House, Pet Cage, Smartphone Alerts - Hub Required

works great amazing range

These temp sensors work great. Phone app work will very east to set up.

We own a small bakery/takeout restaurant and we purchased this to make sure our freezer stayed at the temperature. The product works really well. If the freezer door is open too long and the temperature goes up I receive an alert on my phone and an email. I called customer service to ask questions about setting up the alerts and they were very helpful. I was told that we can attach more sensors and we will be adding them for our other refrigerators/freezers. I think that cameras are in the works too and will be available soon.

I have lots of yolink devices these are great but I have a cheap phone so had to copy and make code darker and bigger. Then scans fine. Work great with their hub. Fairly cheap. And the product support from the company is one of the best. Plus I like that they are local in Irvine CA.

Pleased with units thus far, no hiccups or erratic readings. Seem to be accurate but have no way to calibrate so can’t really say for sure. Would buy again if needed.

Very happy with this Yolink hub and freezer monitor. Easy to setup.

I had a need to monitor 2 refrigerators and 1 new upright freezer. These fit the bill perfectly and at a great price as I purchased 3 of them. My first foray into LoRa technology, Im happy I chose these as I can view temp/humidity levels in all 3 units on my phone, and get alerts if they are out of a range I set for each device. As far as accuracy, I cannot report as I do not have a NIST-traceable standard in which to compare. As far as precision, the fact they are in close agreement speaks to that (see photo). Primary down side to these devices is that you need another app on your smart phone to view. Bottom line: Very good value and I would/will continue to buy as the need arises. Update: May, 2023 After a year using 3 of these, I can say with complete confidence that they are BULLETPROOF. They have been reliably monitoring 3 appliances with perfect continuity, reporting and alerting. I think the hub and LoRa technology makes all the difference as the handful of cheap WiFi smart thermometers keep dropping off the network and overall, just frustrating to use. The YoLink devices never drop out and I have confidence that I can monitor my appliances (and soon a room) while Im traveling. Im buying another today and perhaps more later. You cannot go wrong with the YoLink system.

These work great! Even inside my fridge and freezer! The display is big enough to se, and they work in the cold temps! Great to know when one of the kids leaves the basement fridge open!!!

These are a little complicated (for a simple mind like mine) to set up and get connected but overall, I like them and have ordered a couple more sensors since.

It seems like some of the complaints on these is that theyre not accurate so just to make sure I purchased several analog and digital temperature sensors to check them against their readings. I must say the temperature readings are spot on or at least within 1 degree of spot on which is pretty friggen accurate for such a small sensor. Overall these were probably the easiest things Ive setup in years and literally just scanned QR codes to get it to work; not a single problem the entire way! For something this affordable, adjustable, reliable, and accurate its one of the best investments Ive made in a long time! Hopefully this company does well because I cant wait to see what other sensors they can add to make my life easier! Ultimately you cant go wrong with these, there literally was zero downsides and I cant say enough good things about them!