[Question] Good battery life outdoor IP rated BLE sensor?

[hitech95]

As the tile states as of today what would be a good outdoor sensor with very good battery life?
It should be placed on a pole so it can rain ans snow on it.

• I mostly don't care about size
• I don't need a display.
• I'm mostly interested in the temperature aspect. Humidity is a bonus.
• I don't need a precise measurement, +/- 0.5degC is fine for this.

I need to report the temperature once an hour-ish, so a very long polling interval.

[pvvx]

Any hygrometer with 2xAAA batteries (or CR2450).
Wrap it in a plastic bag and hang it on a tree :)

[pvvx]

TS0201 TZ3000
TH03Z
ZY-ZTH02
ZBEACON-TH01
ZBEACON-MC
...

[hitech95]

Just another question, why the:

• TS0201_TZ3000
• Zbeacon-MC

Are marked "Not recommended for purchase!"?
They seems to be the same device with different firmwares ZB/BLE.

[pvvx]

Sensor CHT8305 limits operation when the battery is discharged to 2.5V.

But if the two-year battery life of the cheapest saline batteries is sufficient for you, then these sensors can be used. With other sensors, the battery life will increase by another couple of years.

Example of operation in a refrigerator freezer (TS0201 TZ3000):

This sensor also operates in "LE Long Range" mode to increase the reception range. However, its power consumption is higher than that of BLE with PHY 1M.

[hitech95]

Oh ok 2 years is enough, I was expecting something around 1 Year life.
So the downside is the clone temperature sensor that has a Vmin too hi for proper battery utilization.