# Cheap outdoor temperature running on power supply, not on battery?

**URL:** <https://community.homey.app/t/cheap-outdoor-temperature-running-on-power-supply-not-on-battery/60082>\
**Category:** Devices\
**Created:** [February 9, 2022, 1:17pm UTC](https://community.homey.app/t/cheap-outdoor-temperature-running-on-power-supply-not-on-battery/60082 "2022-02-09T13:17:35Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sq2hbe](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sq2hbe/32/47993_2.png) [@sq2hbe](https://community.homey.app/u/sq2hbe)\
**Post date:** [February 9, 2022, 1:17pm UTC](https://community.homey.app/t/cheap-outdoor-temperature-running-on-power-supply-not-on-battery/60082/1 "2022-02-09T13:17:35Z")

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Hi,  
I am new,  
looking for a cheap outdoor temperature sensor running on power supply, not on battery?  
All cheap ones I have found running on little “coin” batteries, but I am looking for something to run on power supply and work with homey - any tips?

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**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\
**Post date:** [February 9, 2022, 1:35pm UTC](https://community.homey.app/t/cheap-outdoor-temperature-running-on-power-supply-not-on-battery/60082/2 "2022-02-09T13:35:27Z")

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Why?

Making a good outdoor power supply is “hard”, so they aren’t cheap. Connecting such a power supply to a sensor device in a way that will prevent moisture ingress is also “hard”, so also not cheap.

In my experience, cheap battery-powered temperature/environment sensors like the Aqara devices work very well outside, [as long as you shield them from the elements a bit](https://community.homey.app/t/en-kaartje-met-de-zon-gaat-onder-over/45032/9) and use decent batteries (so no 10-for-€1 Aliexpress deals).

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**Author:** ![sq2hbe](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sq2hbe/32/47993_2.png) [@sq2hbe](https://community.homey.app/u/sq2hbe)\
**Post date:** [February 9, 2022, 1:50pm UTC](https://community.homey.app/t/cheap-outdoor-temperature-running-on-power-supply-not-on-battery/60082/3 "2022-02-09T13:50:27Z")

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Hi Robert,  
thanks for prompt reply, however like in the subject - I want this to run on power supply, not batteries, if I wanted batteries, I would not open the topic 🙂

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<div class="post-metadata">

**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\
**Post date:** [February 9, 2022, 2:08pm UTC](https://community.homey.app/t/cheap-outdoor-temperature-running-on-power-supply-not-on-battery/60082/4 "2022-02-09T14:08:05Z")

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I’ll venture a guess that “a cheap outdoor temperature sensor running on power supply” doesn’t exist, especially if you’re also looking for Homey support.