Two cheap ones.
that isn't helpful lol
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It is. I wouldn't trust one cheap one, but two should do the job.
Freezers or alarms
Alarms.
I mean I was hoping you would of said freezers because I really want another one
Don't let me stop you.
Oh you won't but my wife will lol
Which one have you used before?
I haven't. I just have family that do. A variety of times of purchase cheap ones rated well on Amazon, always duplicated.
Other ways to to go about it depends on the your home automation or lack thereof.