AcuRite Digital Wireless Fridge and Freezer Thermometer with Alarm, Max/Min Temperature for Home and Restaurants (00515M) 4.25" x 3.75"

I've only used it for a month now but it is a relief knowing my freezers are working in the basement. I look at it every day and I can breath easy. Mine are in 2 different freezers and works excellent. Easy to install, no programing, install battery's and it working. It has good signal range. I love the warning buzzer if one of the freezers isn't working.

We have three chest freezers, two of which are out of sight in the basement and full of veggies from the garden, venison from the property and meat from our nephew's farm. The concern has been losing either one, or both if the GFCI trips, and their contents. One freezer is about a year old and the other just a couple months. I saw this system recommended on a FB group and the Amazon reviews seem favorable. So I decided to give it a try, especially since it has a WiFi connection, so the information display can be in the house, and an alarm. We can check the freezers' status at any time and the alarm will warn if we have a pending disaster. It arrived well-packaged. The box exterior is plain cardboard with a plain label just at one end. No fancy marketing! I ordered four AA Lithium batteries at the same time for the sender units, which are recommended by the manufacturer for use in freezers. After installing standard 'Copper Top' batteries in the display first, then the lithiums in the sender units, the temperatures of each sender unit appeared on the display immediately. They were the same at about 72F. To me, the instructions were clear, though it probably does help to be mechanically-inclined! I set the alarms for min and max temps and took the sender units down to the freezers. I hung them on the baskets with tie wraps as the included suction cups wouldn't have stuck on the dimpled freezer walls. The Amazon photo showing the silicone loop wrapped around itself is not very practical as the loop is small compared with the size of the sender unit and you'd have to really stretch it. Too much effort in the depths of a full freezer! When I returned to the main floor, the alarm was sounding. The displayed temperatures were slowly going down as the sender units adjusted to the freezer internal temperatures, but were higher than my max temperature settings. I pressed the "Bell" button to put the alarm to sleep. The display seems to update every few seconds, not instantaneously. After a few minutes, the displayed temps reached the freezer internal temperatures, which were just below 0 deg F. Each reading was slightly different due to being in different freezers of different makes and settings and the temps vary anyway within a few degrees as the freezer compressor cycles. 0 deg F is what is expected though for a chest freezer. I have my alarm settings at -20F and 15F for both freezers. The alarm won't go off for a few minutes if it reaches those temps. This avoids alarms when the freezer lid is opened to put in or take out food. The signal display was indicating max. strength with the display unit maybe 20 ft (straight line) away from the freezers on the floor above. Moving at least double that into the kitchen, where the signal has to pass through a thick natural stone wall in the basement, as well as the floor structure and around various steel/wood heating ducts in the floor, the strength was still high. I was impressed, considering the sender units are also inside a cold, metal box! The two small magnets on the back upper corners of the display unit, aren't quite strong enough to hold it firmly onto the refrigerator door. It slides down as the door is shut and there's a risk of it falling off and being damaged. I have it sitting on the dining room dresser, where it's out of the way, but visible. It could also be hung on a nail on the wall. While a little pricey compared with other similar units (with more 1 Star reviews!), $35 is a small price to pay to avoid spoiling all the valuable food that is in the freezers! So far the system is performing well and to design. I will update should anything go wrong! UPDATE: Several months in and the system is working just fine. After the first week or so, I noticed one of my freezers was 10 degrees or more colder than the other and unnecessarily so. I adjusted it and now I have comparable temps, though the later-purchased freezer has a wider range of temperature fluctuation , due to a less precise control system. Very pleased!

I bought two of these because I wanted to monitor three areas: 1) the fridge compartment of my refrigerator, 2) the freezer compartment of my refrigerator, and 3) a deep freeze located in my kitchen about 15 feet from the fridge. I bought the first thermometer about 18 months ago and added the second unit a month ago. Here's what worked well: - The temps are accurate enough based on comparing with a couple of analog thermometers I have, with only a degree or two difference here and there. - The alerts are simple to set. - The alarms are loud enough. I can barely hear them upstairs in my bedroom, but I can hear them. If I'm awake, I can hear them anywhere in my house. Here's what did not work well: - There is a conflict between the two base stations and the four remote units. I've deployed both freezer remotes plus a single fridge remote. The freezer remotes each paired with their respective base stations, but the fridge remote paired with both. Not a bit deal to me--the fridge remote on my deep freezer base station is just a duplicate of the fridge remote. But if you have two fridges with freezers, you might wind up running into issues keeping the devices separate. The biggest issue I have is the alarm setting for my fridge's freezer. My freezer has a defrost cycle that heats up the freezer compartment to around 16 degrees for a very short time before rapidly cooling back to -10 degrees or so. My understanding is that this behavior is normal, and the food stored in my freezer will not be affected due it it's being frozen solid and the short duration above 0 degrees. But this of course means that I can't set my freezer remote alarm to the 0 degrees the FDA recommends as a minimum freezer temperature. The best that I can do to take advantage of the freezer alarm is to set it for 16-ish degrees in case my freezer completely fails. Overall, I'm happy with these thermometers. They have worked reliably so far. In fact, this alarm notified me last month that my freezer was too warm. Turned out the defrost wasn't working and the coils were iced up. I don't see any way around the daily temperature spike due to my freezer's defrost cycle, so I can't blame this device for not being able to tell if operation is normal or not. Actually, what would be great would be a freezer whose thermostat is tied in to the defrost process so it would know what acceptable temps are during normal operation and during defrost cycle. It could then send appropriate alarms.

Usually I find some little annoyance with consumer-grade devices but system has given me no problems and all the promised features I use have worked flawlessly. I only noticed one time when I first set it up that it lost signal with one of the sensors but it automatically reconnected after about 30 seconds with no manual intervention (like reset or reboot). No other issues noticed in the rest of the six months I had it installed. The min/max function is great because you can see if there were any problems between when you looked at it last. This is also very helpful if you have a new refrigerator and you are trying to get the settings perfect. I would also think it would be useful for a fridge with electronics to make sure they giving accurate readings. Note that used lithium batteries instead of the included alkaline as, according to the instructions, they perform better in low temperatures. I cannot comment on the alarm feature as I have it disabled. The magnet on the display is decently strong and it hasn’t moved around at all even with repeated door open and closing. The controller color is grey/silver and looks great on my stainless fridge. Probably would look good on most other colors too. The current temperature readings are large enough to be seen from about 10 feet with decent vision and lighting but the display itself is not lighted (which makes sense as it runs on batteries). Highly recommended!

Great product! I have a double door refrigertaor and a deep freezer. Makes me feel safe to be able to monitor the temperature in both. I actually turned down the freezing control to lowest setting in my deep freezer, when I realised that temperature was always showing as lower than -18 celsius. Also helped me realise that freezer in my samsung double door has very wide variation between -5 to -18 on daily basis. Made me realise that it would the reason why ice cream are kind of soft , in the freezer of my double door, compared to deep freezer. I guess that is the reason consumer product companies, don't put temperature displays on the common refrigerator.

Easy to set up with great instructions. Accurate and easy to use. Would be better if it had a backlight but not a deal breaker. Great to glance at and see what my fridge/freezer temp is in the back of my canopy.

El producto cumple con su función. Monitorea congelador y refrigerador.

Perfect... Item as described..quick delivery

Its very good peice .. and give you correct dgrees .. thank you