YoLink Temperature Sensor with Probe, YS8004

Wanted a thermometer that showed temperature on my phone. The X3 works great as a remote thermometer for our in-ground pool. Set up was easy at the pool and to home Wi-Fi. Went with the extended-life battery and hope to get years of use from it. Sensor is located 60 feet from hub and the connection has been solid since it was installed. Notifications when water temp drops below preset threshold is helpful. Highly recommended for anyone looking for a reliable and accurate remote temperature probe with temp display on your phone.

Getting reliable and accurate pool water temperature seems easy but most thermometers, especially digital ones are not very accurate or not calibrated properly from factory. In an effort to ensure the most accurate readings I’ve used multiple analog (alcohol and even mercury) thermometers with varying degrees of success. Getting all thermometers to agree seems impossible while most of the good ones do come very close to each other. Now using analog ones is great since they never need calibration, however they are not practical as you have to go to them rather than get remote readings, and of course there is no historical data. In my case I wanted accurate remote readings often and nothing floating around in the pool, so I took advantage of a water pit in the pool concrete deck, and installed multiple temperature sensors in the same spot and begun testing and gathering temperature data. Before getting the YoLink LoRa Temperature Sensor YS8014 X3 I had both several Aqara and YoLink YS8004 sensors. I had some connectivity issues with the other brands due to the “underground” location, however all the YoLink sensors connected perfectly and quickly, so I narrowed down my options to YoLink. While all YoLink sensors seemed to work very well, I was curious to see how much better the new YS8014 X3 sensor was and how it compared to the others. While the end results proved that all sensors were very close to each other, I really liked that the new YS8014 X3 allows for more samples more often, as low as 1 minute and as long as 1h. Interestingly 1h is the norm with most such sensors. The YS8014 X3 also has a convenient LCD display that will also automatically turn off at your choice timeout to save batter life. Just like the other YoLink temperature sensors the YS8014 X3 uses easily replaceable batteries but now there is a 2y and 5y battery option at purchase, so more flexibility and longer battery life overall. It also saves temperature data internally in case the hub us off-line then sends it once it re-connects so no data is lost! I will end up keeping the YoLink YS8014 X3 sensor in the pool water pit and move the others to my kitchen refrigerator and garage fridge, to keep an eye on them and get alerts should the cooling stop. I lost a full fridge of items a while ago due to a failure of the garage fridge, and at the time I had no sensor to monitor the inside as all I tried could not communicate from inside the fridge, except YoLink! Anyway, I am very pleased with ALL the YoLInk temperature sensors and would certainly recommend them for almost any need given the flexibility features, great support services and long range LoRa technology.

I will start off by saying if you need an extremely accurate thermometer (like down to 1/10th of a degree) I would look elsewhere. But for a general purpose thermometer with notifications and a long range it is amazing. Much better than Bluetooth ones I’ve had in the past. It was extremely easy to setup (with required hub) If you have need to know the temperature of something constantly that is a decent ways away from your wireless network I don’t think you are going to beat this product. (I use it for my outdoor worm bin)

This is probably the single best purchase I've made for my pool. Does exactly what it is supposed to do, accurate, easily connects and syncs with wifi/app, and gives me data trends which I love. Phenomenal product, I would repurchase 10 times over but the beautiful thing I don't have to!! Battery life is still going strong 2 years in! Couldn't be happier.

Works great so far to track our outdoor remote refrigerated unit. Easy to set up and notified us when something was wrong.

In this age of cheap Chinese garbage, Amazon junk listings, fly-by-night companies, and generally low quality products, it was a REAL TREAT to come across this company and its products. In fact, this product exceeded my expectations by so much that I was half-expecting something terrible to happen, like it bursting on fire or something similar. Firstly, every one of the products I bought, (shut-off valve, hub, 3 water leak sensors, 2 outdoor temp sensors for freezers, and 2 indoor temp sensors for environmental control), are SOLIDLY MADE. You can feel it in your hand, and it's a feeling that's getting rarer and rarer these days for consumer goods. They're well-made and just SOLID, with absolutely nothing feeling cheap at all. All of the devices went into my freezers, attic, and garage without issue. When I got to the software, that's where I really expected there to be problems, since many of these "smart" companies aren't very smart at all, and they don't seem to test their apps for user-friendliness before releasing them. However I was amazed at how simple it all really was. Getting the hub online, adding devices to it, creating rooms, configuring alarms, etc, all of it was quick and absolutely painless. The only real quibble I could have, (and it isn't much of one at all), is that the alarm section took a moment to figure out. But within a ridiculously short time I had all the devices added and their operating parameters set. Perhaps another helpful note - when you turn on a device for the first time, give it a full minute to link up to the hub. If you don't, the device will add to the hub but it will show as offline, and won't appear to ever come online. After doing that twice, (adding the device within a few seconds of turning it on), I then waited a few for the rest and they added without issue. All of my testing, (temperatures turning on fans and heaters, water leaks activating the valve, etc), all passed with flying colors. All in all, this just feels like money well spent, and YoLink has become one of my favorite companies. Highly recommend.

Accurate and reliable. Always works

I love all of my Yolink devices but this one is awful. I purchased to monitor hot water temperature on our hot water heater using heat tape to secure the probe to the outlet line of the hot water heater. This way we could see when the hot water was recovered. First of all it had no ability to have live readings. Minimum frequency is 5 minute interval. Ok, that’s what they designed, I don’t like it but let’s see if I can make this work. I set it to 5 minute intervals and the quickest it would read the tempo is every 18-20 minutes. So that won’t work. In addition to that issue, the temp ranged from 132.8 F to 106.5 F. I put another probe temp monitor on it to see if this was really gaining and it only fluctuated .4 F over one hour of monitoring. Too bad, I really want a YoLink device with live accurate temp monitoring.

Bought for my freezer.. works like a charm!!

Sensor and hub work brilliantly, easy setup, excellent range and battery life. Integrates with home assistant easily and YoLink app works well. Unfortunately US and UK devices are incompatible, which wasn't mentioned before purchase, so importing YoLink from Amazon US is best avoided. Sadly it appears a UK/EU version of the weatherproof temperature sensor isn't available yet.

The photos show an outdoor YoLink temp sensor with probe being used to check temperature of compost and send alert when temp reaches 150 degrees F. It has worked for this application flawlessly since the end of May. Note that the thermo well and the black connection housing have been supplied by us and allows the probe to be inserted into the compost with little effort. One of the photos shows a monthly readout of temperatures. For anyone looking for a very reliable reporting device for compost or soil temperature this could be what you need. I plan to add many other YoLink sensors over time and eventually replace at least part of our security system especially in buildings that are constantly losing connection with our panel. I highly recommend YoLink products for ease of setup and their ability to work when beyond communication range of many other sensors.

Worked great for the pool hooked up to our existing hub for water leaks easily with scan code

I use this to remotely monitor the temperature inside the eavestrough for my heat trace. The attached probe is waterproof and the Yolink app allows me to set alerts to automatically trigger on/off of a Yolink outdoor power outlet to turn the heat trace on and off to avoid freezing and blocking of a downspout. This also saves me money when temperatures are so cold that snow isn’t melting or warm enough that water is flowing that it will automatically turn off. Love it!