Forum Discussion

marcsbigfoot20b's avatar
marcsbigfoot20b
Explorer
Apr 17, 2019

Temperature Data Logging, fridge, freezer, coach, etc..

Always wanted to see what my dometic fridge was doing.
Got two Sensor Push units to test. They are small 1.5” x 1.5” x .7” squares.
I think they can hold 2 weeks of data before they overwrite , so I just connect to my iPhone or iPad and it auto uploads by Bluetooth or WiFi and adds the data, BT range is impressive.
They do both temp and humidity.
A few pics of testing. Looks like at ambient of 83 outside and 79 in the fridge, it took exactly 3 hours to get to 40 on propane with Amish cooling unit and internal and external fans.
The long test was Mexico trip.



  • dougrainer's avatar
    dougrainer
    Nomad
    Apr 18, 2019
    As a Professional RV Tech, I have 2 Temp Datalogger USB sticks I use. I use them for refer temps over time when a customer states that the refer temps go up and down and I use them when a customer states his roof AC's cannot keep a cold temp in the RV on very hot days. It shuts them up, when I produce up to 2 weeks of 24/7 monitoring taking a temp every 15 minutes. I log it and then print out the graph's and hand to customer. MOST effective tool for these type complaints. Doug
  • marcsbigfoot20b's avatar
    marcsbigfoot20b
    Explorer
    Apr 18, 2019
    Sorry guys I’m a tech junkie, I fix the machines that make microchips for a living so I like this kind of stuff.
    I have accurite temp sensors but they only show highs and lows, no data logging to see what happened all the time.

    I tested the cool down time on empty fridge, then filled it up with food, FYI.

    I also use them in my house and outside, the Bluetooth range is really good.
    Uses are limited to your imagination.

    You can also set alarms for the temp to alert if let’s say the flame blows out on your fridge while traveling and the temps get over 40. I’m in Phoenix so when traveling in 115 temps it’s good to know what’s happening.
  • NRALIFR's avatar
    NRALIFR
    Explorer
    Apr 17, 2019
    I keep a close eye on my fridge temps while on the road too, tho I’m just using a a wireless unit. I like knowing it’s working as it should, and more importantly, when something is wrong. I can tell something isn’t right long before the meat, milk, beer and ice cream is in any danger.

    Thanks for making me aware of these, I’ll have to check them out.

    I try to avoid gastrointestinal “surprises” as much as possible. :E

    :):)
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    Apr 17, 2019
    Ralph Cramden wrote:
    fj12ryder wrote:
    Ralph Cramden wrote:
    vermilye wrote:
    fj12ryder wrote:
    Some information on the sensors you used, their cost, and where you got them would be nice. I kind of like the idea, but wouldn't want to spend a lot of money for them.


    SensorPush

    Amazon


    I guess if dropping $50 to see the fridge temp on your phone is worth it to you, then it's worth it to you.

    I have a much more cost effective method of knowing the fridge temperature. I pull out a beer and if its not cold I know somethings wrong.
    You could always try the meatloaf after, unknown to you the fridge has been off, and see if you get sick. Both work.


    But only if you eat meatloaf, try slathering it with some hot mayonnaise. $1.00 thermometers do a fairly decent job too. One thing is for sure at RVnet, things are complicated and get more complicated as time goes by.
    Don't like it? Don't use it. Doesn't get much simpler than that. At the same time don't belittle people who do like gadgets. If it weren't for them you'd still be using a horse and wagon.
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    Apr 17, 2019
    Ralph Cramden wrote:
    vermilye wrote:
    fj12ryder wrote:
    Some information on the sensors you used, their cost, and where you got them would be nice. I kind of like the idea, but wouldn't want to spend a lot of money for them.


    SensorPush

    Amazon


    I guess if dropping $50 to see the fridge temp on your phone is worth it to you, then it's worth it to you.

    I have a much more cost effective method of knowing the fridge temperature. I pull out a beer and if its not cold I know somethings wrong.
    You could always try the meatloaf after, unknown to you the fridge has been off, and see if you get sick. Both work.
  • vermilye's avatar
    vermilye
    Explorer
    Apr 17, 2019
    fj12ryder wrote:
    Some information on the sensors you used, their cost, and where you got them would be nice. I kind of like the idea, but wouldn't want to spend a lot of money for them.


    SensorPush

    Amazon
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    Apr 17, 2019
    Some information on the sensors you used, their cost, and where you got them would be nice. I kind of like the idea, but wouldn't want to spend a lot of money for them.
  • Airdaile's avatar
    Airdaile
    Explorer
    Apr 17, 2019
    Some useful info there i.e. how long before you leave should you start your fridge.

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