Ambient Weather WH51RF Refrigerator Freezer Sensor

Worked perfect with my Ambient 2902-c. Set the channel and added it with no issues. Use it in a upright freezer on a different level, no issues.

Impressive on many levels...this is a pretty awesome sensor for tracking and monitoring your refrigerator/freezer temperatures. This sensor seems very well made with high-quality materials. Super easy to setup, and it works perfectly with my Ecowitt Wittboy Pro system (WS90). It seems highly accurate, and has great transmission range. It has several mounting options, which is nice, and one mounting option that is not shown in the listing is using the included mounting clip (attached to the bottom of the sensor) to hold it upright on a shelf. I have configured it to send an email alert when my deep freezer reaches a certain temperature, greatly reducing any chance of food loss due to power interruptions or the door being left open. I am using Energizer Ultimate Lithium batteries for extended battery life and better performance in cold conditions. And although this sensor may seem a bit higher priced compared to other temperature sensors, it is specifically designed for use in refrigerators/freezers, and is actually a pretty solid value. This is a great refrigerator/freezer sensor and is fully compatible with the Ecowitt system...five stars all the way...highly recommend.

I purchased two of these for an older refrigerator/freezer unit to make sure the thing doesn't shut off or malfunction and waste hundreds of dollars worth of groceries and have yet to have an issue with either of them. Easily connected to my Ambient Weather ws-2000 wx. station, allowing me to see the exact internal temperatures on my app at any time. No issues whatsoever working from within the refrigerator with no wires, transmitting data to the receiver on the opposite side of the house. I used a thermometer to ensure accuracy & they were accurate to with 0.2°F.

Use to monitor my deep freezers and refrigerators. So far working very good. Has saved us once when a fridge door got left open.

Pros: Easy to setup even with the weather station's retro 1990's VHS player-style interface. Works well in deep freezers with rechargeable Eneloop batteries. Provides data points over time which are useful for food preservation. Cons: The WS-2000 can't be programmed to trigger a console alert for this particular sensor, which is bananas considering this is the sensor that most consumers would find such a feature the most useful. The app can be setup to send a SILENT alert if the temperature falls outside a programmed range, but it won't send an AUDIBLE alert (like noise from the app or a text message) unless one pays for a subscription in the app. Not all of us take our phones out, log in, and check for silent alerts on a regular basis, and by then, food could be thawed or thawing. This just happened to me. The workaround is to set the app to send both a push notification and an email, and then configure the phone to make an audible alert if an email from ambient weather arrives, because their app will remain silent. The sensors are expensive for what they do, but they are reliable. I understand they have a monopoly so only their sensors can integrate with their systems so they can charge whatever they want, but it would be nice if they offered a cheaper version that didn't include a humidity sensor since I find that information irrelevant for a deep freezer. In summary, it's a good (and spendy) product that includes a humidity sensor at additional cost that most of us don't need for inside our freezers / refrigerators, and there is no way to trigger an audible warning without paying a monitoring fee or reading this review to learn the workaround.