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 purchased three of the YoLink Humidistats to run 4 brand new humidifiers. I bought them to start this frigid, dry air, winter. Thats One YoLink Humidistat on Two Humidifiers in the Great Room (Living Rm, Dining Rm.) and they run better than I could have ever expected using the YoLink Humidity Meters. Im also running One YoLink Humidistat in the Kitchen and Master Bedroom, each Running one humidifier in each room. This takes total care of the first floor of my home. Its so comfortable now, I cant say enough. They start when humidity gets below 45% and shut off when humidity gets above 50%, restart at 45% and again stop at 50%, thats 24x7. Start and Stop humidity levels are up to you. So Good I bought and am waiting enough to do second floor. YoLink has been so easy to set up. All their devices are about two steps to get you on the YoLink app. Once you see them on the app, you may need a few tips with support because they do so much. Give them a call like I did on my first humidistat and Ive set up the rest by myself.

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.

My wife was complaining that the temperature measurement reported by alexa was off. So I moved the sensor to the thermostat to see the difference and the temperature did not change. So I checked yolink app only to see that all devices were reported offline. Two door sensor, three temperature sensors, two garage door sensors, a water spill sensor, and the hub. Well, must be the hub, I thought, so I rebooted it. The hub and one temperature sensor came back. All the rest are still not reporting... UPDATE: So all the devices slowly updated themselves with yolink hub. My fault was that I did not check in the app to be alarmed when yolink hub goes offline. Now it is ON. A bit disturbing that the hub can go bizzerk while I am away and I can do nothing because it requires hard reboot. Otherwise all these units work good and I am glad I bought them. I wish they had more features.

Very easy set up. Allows me to see freezer temp on my phone. After the freezer door was left open twice, this will warn me long before Ive lost food due to thawing! Well worth the investment!

I have had several temperature sensors and leak sensors set up in each of three different homes. I have monitored up to 32 sensors at one time. I have leak sensors at all of my plumbing fixtures. I placed temperature sensors in a couple of locations in the house, in my fridge, and in my freezer. This is the best system I have found. It’s easy to update when moving to a new home. I can check status at a glance and can sit notifications on temperature and humidity parameters. I change the batteries about once a year.

I stumbled upon YoLink while searching on the internet for separate smart temperature and smart humidity sensors for several automation projects in my home, so I was excited to find they have a temperature/humidity sensor (in a single unit). As an electronics and home automation enthusiast, I have since been adding them all over my home. Here are a couple pictures, and here are some applications Ive tried out or will be implementing in my home: Automating control of exhaust fan in bathroom - turn on fan before the room steams up during a shower/bath Keeping an eye on a fridge on its last leg Monitoring the temp and humidity of a bearded dragon tank. Both are very important. I also have automations to turn the heat lamp on if it gets too cold. My daughter, its her pet, has the app installed and receives notifications of problems with the temp or humidity. I also have a general tank light on a smart plug, on a schedule. I am going to be installing a whole house fan soon, and I want to use these, in most rooms of the house, to slow or turn off the fan, as well as to control ceiling fans in the bedrooms (to turn them down or off as it starts to get too cold at night, with the WHF running all night, otherwise). The ceiling fans are on Lutron Caseta switches, but the Alexa and IFTTT.com integration allows for automations that include multiple brands. Very flexible! I can see additional uses for this, keeping an eye on a wine cellar, a leaky basement (in conjunction with their Water Sensor), an unoccupied property or building or room subject to damage from freezing, extreme heat or humidity (and mold and other resulting issues). Thats a great price, too. Which is good, because I plan to get more of them!

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.

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

Used for bearded dragon tank

Excellent item for warnings on coolers and freezers.