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The Ambient Weather WH51RF Refrigerator Freezer Sensor is designed for durability, accuracy, and safe operation in the cold and humid conditions of a freezer or refrigerator while relaying temperature and humidity levels, allowing you to monitor and maintain optimal conditions for your perishable goods. Check your readings on the sensor screen or remotely monitor conditions from your personal dashboard on the free AWN app or desktop version by visiting ambientweather.net.
The sensor offers flexible placement options such as hanging from a metal wire shelf, mounting on a wall, or simply resting on a horizontal surface. This versatility ensures optimal positioning for accurate readings without compromising storage space or convenience.
With a reporting frequency of approximately every 80 seconds and operating on the 915MHz frequency, the WH51RF delivers timely and reliable data to keep users informed about temperature and humidity levels within their fridge or freezer.
Powered by two AA batteries (not included), the sensor has a battery life of approximately one year, minimizing the need for frequent maintenance and ensuring uninterrupted monitoring over extended periods.
Compatibility List:
● WS-1551-IP
● WS-1938
● WS-1965
● WS-2000
● WS-2902
● WS-3000 X3, X5, X8
● WS-5000, WS-5000-IP, WS-5050
● ObserverIP, ObserverIP2.0, WeatherHub
Features:
- 8 channel dip switches
- Auto resync
- 80 second update rate
- 915 MHz frequency
- 300 ft line of sight (100 ft in most conditions)
Connect to AWN
Responsive Design
Weather on the Go
Extensive Data & Alerts
Michael L
Reviewed in the United States on February 18, 2025
I have tried other freezer sensors/alarms in the past and they all had issues. This one is rock solid, good signal from my freezer in the garage, and battery life is great.
Scott P.
Reviewed in the United States on February 10, 2025
Does everything it's supposed to. Very good range. I have the unit inside a metal fridge that inside of a metal walled camper that is approximately 150 to 200 feet from the house. No connection issues at all.
Mike K7FLA
Reviewed in the United States on January 20, 2025
This is a nice Refrigerator Freezer Sensor and works as expected. I purchased (2) of the, one for my refrigerator freezer in the house, and one for my chest freezer in the garage. Both setup and were detected right away as soon as I added the batteries. I was pleasantly surprised that they were detected inside the freezer, especially the chest freezer in the garage. Nice sensor at a reasonable price.
walter
Reviewed in the United States on January 18, 2025
Love this company, good distance for connection
Dat
Reviewed in the United States on January 13, 2025
I just pop some batteries in and the Ambient hub finds them right away on whatever channel the dip switches are in. Got it in the main freezer and the one in the basement. The hub cycles through them and displays their data.
Ahmed F. Shaker
Reviewed in the United States on April 5, 2025
I have 4 units around my boat freezers and fridges. It works fine for 2 months, then it just stopped working. When i opened it, the battery was corroded. My only issue so far is that this product usually gets used in hight humidity areas and it doesn’t have any kind of sealing or protection against moisture intrusion. A rubber seal and an o-ring will be an excellent idea. I will try to clean it and put new batteries and hopefully it will work again.
Aradia
Reviewed in the United States on August 18, 2024
*** Update 9/9/24. We have had a couple of incidents where we thought the freezer was closed. It LOOKED closed. But it wasn’t completely. Today I got an alert the freezer temperature was at a certain point I set the alert up for. I had just been in it getting something for dinner. Went back down, sure enough it LOOKED closed, but it wasn’t. So happy I got these!So far at the time of this review, I’m impressed. It’s been working for about 9-10 days and I like what I see. My console is currently on the 3rd floor, and the sensor is in a standup freezer located on the first floor and no connection problems whatever. I bought it because recently we had a problem with a power surge that took out our Verizon box, and our freezer was on the same outlet. We had no idea the freezer was down (although we saw pretty quickly the internet was down! LOL). Luckily we caught it and ran an extension cord to the freezer since the outlet was blown from the surge. Based on the readings, I can even tell when someone opens the freezer to get something out! I’m buying two more sensors for my refrigerator and freezer in the kitchen!
EricB
Reviewed in the United States on July 8, 2024
I have this in a deep freeze that is used to store processed meat including venison. I was worried about the signal strength passing through a metal freezer and across the house since freezers can act as a faraday cage. It has a strong signal and works perfectly. Note that I am using Energizer Ultimate Lithium batteries since they work well in freezing temps.I can see the temp on my WS2000 display and can also see the temp as well as historical graphs with the Ambient Weather website/app. I am watching the data and have set it to send me a notification if it reaches a temperature slightly above the highest temperature it hits during routine cycling and defrost.I am sharing my weather data online and have also confirmed that Ambient Weather and Weather Underground do not share data from this sensor online. It does not even show this sensor at all from public view, but I can see it when logged into my AWN dashboard.I am very happy with this purchase! I feel it is well worth the investment since losing a freezer full of food would be many times the cost of this sensor.
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