WiFi Temperature Sensor Smart Thermometer: Digital Temperature Monitor Gauge with Waterproof External Probe, App Alert & Buzzer Alarm, Rechargeable Battery, for Freezer, Refrigerator, Fish Tank

Sensor works fine. The adhesive strip that came with it is too weak to support the units weight. The magnetic buttons work well so I used them to install the sensor.

I bought this to use as a remote temp monitor for my hot tub. Because it needed 120v power I installed a plug off the hot tub incoming power and installed the monitor inside the tub enclosure.The 3 feet cable was long enough to reach up and over the side of the tub.Someone said you could not change it to fahrenheit it is easy to set up in the app.I have alerts set for high and low temp so I know if I have lost power or something in the tub is not working before the tub freezes. Alerts are via text, email, and phone call.The only warning is, it is not weather proof. If you are going to use it outside, you have to mount it in an enclosure.

I use this to monitor the temp in a sauna and it is accurate and the red LED display is readable from 20 feet away. Only problem is that Alexa can tell you what the temperature is, but you can NOT create a Routine to do anything based on that temp. So you can not turn anything on or off if the temperature is high or low. All you can do is ask Alexa what the temp is. So this is a disappointment.

ProsPlugs in, no batteries needed.Magnets work wellDisplay is easy to readConsNot accurate, both sensors off by over 5 degrees (too high).Unreliable. Both sensors routinely have 15+ degree swings, setting off the alarms.Connection is unreliable. Constant disconnects and or shoring as offline.On/off switch is recessed so not easy to turn on or off. Annoying when alarm is going off due to incorrect temperature read.Sensor cord is so large it causes gap in freezer seal.Does not come with wall plug adapters.

I needed a device that would allow me to remotely check on the temperature of a refrigerator. I can get real time readouts as needed, and set alarm points if desired. It contains a battery, but I'm not sure how long the device would run on that battery. You can of course attach it to a 5 volt USB charger and that will keep it going indefinitely, using the internal battery to cover a power failure.

Does what I needed. Keeps my fridge temperature log and I can easily access with my phone anywhere.

This is perfect for monitoring my fridge in a different house. Big and easy to read, and works flawlessly with the app for it.It says it works with Smartthings, but Smarthings just won't see it no matter what I try. That was disappointing, but it works well otherwise.

Was unable to get it to read in Fahrenheit, sensor failed after 4 months operation