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How's the battery life? I saw a review saying the base unit uses a set a week which seems absurd.
I didn't measure them for accuracy, I use them more for temp change alert (so my freezers go beyond 15 degrees chances are someone left them open longer than a few minutes), so after it goes beyond a certain temperature threshold it starts to beep like a 1980s digital watch alarm.
I see a few on amazon, but given the audience I am curious if any have had success with the small battery operated devices with BT5.
My only complaint is the one of the sensors has the same wireless band as my outdoor weather station so for a while I was curious why the outdoor temp was 36F
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On the other hand, the receiver itself needs a new set of NIMH/alkaline batteries every 2-3 months due to display being on 24/7.
I bought the unit after my garage circuit breaker tripped, and we lost a freezer full of food (no idea it had tripped until over a day later).
Since then, it was helpful in:
- Noticing how often fridge-freezers go through defrost cycles.
- An alarm if the kids leave the freezer open accidentally (has happened only once - but that's worth the price).