# Temperature sensor with external probe and on battery power

**URL:** <https://community.homey.app/t/temperature-sensor-with-external-probe-and-on-battery-power/99460>\
**Category:** Devices\
**Created:** [December 30, 2023, 7:02pm UTC](https://community.homey.app/t/temperature-sensor-with-external-probe-and-on-battery-power/99460 "2023-12-30T19:02:52Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\
**Post date:** [December 31, 2023, 11:48am UTC](https://community.homey.app/t/temperature-sensor-with-external-probe-and-on-battery-power/99460/3 "2023-12-31T11:48:53Z")

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The only one battery powered temperature sensors with external probe I know are from Ecowitt:

> **[Temp Sensor](https://shop.ecowitt.com/collections/temp-sensor)**
>
> Ecowitt provides professional weather products to people around the world. With strong technology and factory backup, ecowitt will be your perfect choice! Check our store for more weather products.

A Homey App is of course available ([Misol and Ecowitt](https://homey.app/en-de/app/com.misol/Misol-and-Ecowitt/)), but I recommend to check in the related [topic](https://community.homey.app/t/app-pro-misol-and-ecowitt-release-0-1-34-test-0-1-37/47076), which of them are supported.  
In addition, you should find out which of these sensors is really suitable for this application (IP protection class, resistance to chemicals, e.g. chlorine).  
And please note the transmission frequency. Depending on the region, only a certain frequency is permitted.

@Peter_Kawa

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/f/dff051843916f9aa7b27781306341e2570b11fc8.png)

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_[View the full topic](https://community.homey.app/t/temperature-sensor-with-external-probe-and-on-battery-power/99460)._