Freezer Displays

Makes and models?

Is it possible that different symbols are displayed for target temp and actual temp, particularly if the latter was above the maximum limit at any time?

If you require and old manual I've often found sites such as:

my first suggestion would be to find yourself a decent thermometer

I have one of these

It works well giving the temperature in my fridge and in my freezer (two separate units) - it also gives max and min temperatures since the unit was cleared/reset.

Note alkaline batteries are only specified down to -20C and I found them unreliable when fitted to the wireless sensor in the freezer. Totally cured when fitted with 1.5V Lithium cells which are specified down to -40C

I have the same unit and it is both good and cheap. Recommended. However the instructions are in "Chinglish".

I don't get problems using ordinary alkaline cells and they will last 6 months or more.

Thanks for that.

I had been looking for this type of device, and had concluded that the two main drawbacks would be a) Alkaline batteries at the limit of their low temperature range - and b) sensors sitting inside a metal box (the fridge or Freezer) being able to transmit to a display unit some distance away.

Lithium batteries solve that first point, whilst the second point will have to be 'suck it and see'.

I'll risk £13 on that device & also get some Lithium AA cells.

P.S. I note the seller has the following suggestions:

"Do not put the receiver near metal" and "The thermometer's digital display is magnet-mountable on a fridge"

I have two sets of these (four senders and two displays) as I wanted to monitor the temperature display from two locations. I use each transmitter sender in a different freezer running at about -17 or -18C.

With alkalines after many months, both senders transmit reliably through the freezer door(s) and then through two brick walls to a reciever 40 feet away with no problem. They have worked for years.

Chinese manufacturers copy one another, so I don't know if what I have is precisely the same as what's on sale now. Or whether another vendor has an equally good product. I bought both in 2018 and they are still on Amazon:

The only annoyance is pairing each sender, especially using the crummy instructions I got.

I have the display mounted around 1 metre away from freezer. The fridge which is also being monitored is in an adjacent room separated by a brick and tiled wall