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

I bought this unit because the price is right and it has great reviews. I just set it up and it was super easy and the readings seem to be pretty accurate. Im only downgrading one star because I also bought it because I wanted a nice large display. The picture in the listing make the unit look like its four or five inches across, but as you can see in the picture Im posting its pretty tiny. I know this is partially my fault because I guess I didnt pay close enough attention to the specifications, but I do believe the picture is deceiving.

Check your home temperature and humidity from your phone at any time. Works great in an apartment without a smart thermostat and I want to check the temperature when Im away. So simple to connect to the yolink hub.

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.

I put one of these in each of my freezers. Even the one out in the garage gets a good signal! It is peace of mind to know I will be notified if there is an issue with the temperature before it is too late.

Ive had 4 moisture sensors in the attic now for over 2 years and 2 temp-humidity sensors. Due to house layout, I have 2 hubs. From day 1 the hubs would not connect to the WiFi. Fortunately I have two router satellite stations with RJ45 plugs. YoLink sent me a third hub over a year ago, but it failed to connect via WiFi as the original two did. Today I pulled the third hub out again (Dec 2022), just to see if something might have changed. No joy, so hub 3 goes back into storage. I continue to see hub connection issues on the Q&A which YoLink attributes to firewalls, user connections, etc. In other words, the problem is with the user. Im convinced the problem is with the YoLink design, which theyve been unable or unwilling to fix. Yes, Ive been in touch with tech support when I originally received the hubs. No joy. Other than the hub issue, the sensors work great, and actually detected an AC condensation leak earlier this year and sent me alarm notices. But dont plan on the hubs being connected to your house WiFi. Maybe they will, but if they wont like many of us, you will have to rely on hard cable connection for operations.

Used for bearded dragon tank

I have several of these units monitoring high and low temperatures. They work well, even when cold; they alert me when the freezer gets too warm. Alexa integration is lacking, however; you can’t trigger events in Alexa when the limits are exceeded. The in-app alerts work, but aren’t as flexible.

Setup was a breeze, the app works great on my Samsung Galaxy Note 2, and I have peace of mind in my food retail facility. As an engineer who was involved in the early days of LoRa, its great to see how far it has come in terms of ease of use and reliability. Range is second to none, I have one sensor located in a metal, walk in cooler about 200 ft from the hub, and the signal is still strong.

Another essential device for remote monitoring, and takes seconds to add to an existing YoLink network. Has an easy to read local display, and is nicely living on the back wall of our vacation home fridge. Set the temp and RH limits on the app, and now I’ll know if the fridge fails or someone leaves the door open.

Easy to instal - includes downloadable manuals and videos.