# Temp sensor freezee

**URL:** <https://community.homey.app/t/temp-sensor-freezee/137227>\
**Category:** Questions & Help\
**Created:** [May 28, 2025, 11:43am UTC](https://community.homey.app/t/temp-sensor-freezee/137227 "2025-05-28T11:43:27Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Mats\_Nilsson2](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/mats_nilsson2/32/134747_2.png) [@Mats\_Nilsson2](https://community.homey.app/u/Mats_Nilsson2)\
**Post date:** [May 28, 2025, 11:43am UTC](https://community.homey.app/t/temp-sensor-freezee/137227/1 "2025-05-28T11:43:27Z")

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Hi  
I have a Homey Bridge  
I am looking for a temp sensor so I can get an alarm if temp is to high in my freezer but i can’t find any. Would prefer sensor in freezer and device on the warm side. Any suggestions?

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [May 28, 2025, 12:05pm UTC](https://community.homey.app/t/temp-sensor-freezee/137227/2 "2025-05-28T12:05:05Z")

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Shelly Plus Addon with a DS18B20 probe.  
No Homey bridge needed, works directly with the Homey Cloud app.  
[https://www.shelly.com/products/shelly-plus-add-on](https://www.shelly.com/products/shelly-plus-add-on)

 ![Screenshot_20250528_135946_Chrome](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/c/2/c2872abfa34d8c91060126714b478384eaf57e55.jpeg)

Shelly Plus Addon supporting devices:

- Shelly Gen4 devices:  
Shelly 1 Gen4  
Shelly 1PM Gen4

- Shelly Gen3 devices:  
Shelly 1/1PM Gen3  
Shelly 2PM Gen3  
Shelly i4 Gen3  
Shelly DALI Dimmer Gen3  
Shelly Dimmer 0/1-10V PM Gen3

- Shelly Plus devices:  
Shelly Plus 1/1PM  
Shelly Plus 1/1PM UL  
Shelly Plus 2PM  
Shelly Plus 2PM UL  
Shelly Plus i4/i4DC  
Shelly Plus 0-10V Dimmer PM  
Shelly Plus RGBW PM

On the other hand, I’ve an Aqara Temperature sensor INSIDE the freezer for several years now, works flawlessly;  
You’ll need a Homey Bridge (for zigbee).

 ![1000049438](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/0/00ee3dbf52effa4958e8e2d1eb80ed72049622c1.jpeg)

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<div class="post-metadata">

**Author:** ![Mats\_Nilsson2](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/mats_nilsson2/32/134747_2.png) [@Mats\_Nilsson2](https://community.homey.app/u/Mats_Nilsson2)\
**Post date:** [May 28, 2025, 12:11pm UTC](https://community.homey.app/t/temp-sensor-freezee/137227/3 "2025-05-28T12:11:46Z")

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Hi thanx  
No problem with the battery in the cold?

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<div class="post-metadata">

**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [May 28, 2025, 12:24pm UTC](https://community.homey.app/t/temp-sensor-freezee/137227/4 "2025-05-28T12:24:51Z")

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It drains around 2 to 3 times quicker.  
It lasts 3 to 4 months, with el-cheapo no name batteries .

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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:** [May 28, 2025, 1:32pm UTC](https://community.homey.app/t/temp-sensor-freezee/137227/5 "2025-05-28T13:32:42Z")

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Which protocol? Battery operated, or is hard wired, e.g. with a USB Power Supply, also possible? With or without additional hub? 🤷‍♂️  
I don’t know where you checked for temperature sensors, because there are a few options that are also compatible with a Homey Bridge, e.g.:

Also suitable for outdoor use:  
– [Sensative Strips Comfort](https://sensative.com/sensors/strips-zwave/comfort/) (Z-Wave)  
– [SwitchBot Indoor/Outdoor Thermo-Hygrometer](https://eu.switch-bot.com/products/switchbot-indoor-outdoor-thermo-hygrometer) (additional Hub needed)

Usable with an external sensor and a power supply:  
– [Fibaro Smart Implant](https://www.fibaro.com/en/products/smart-implant/) (Z-Wave)  
– [Shelly Plus Uni](https://www.shelly.com/products/shelly-plus-uni) (WiFi)

IMHO only partially recommendable:  
– [Sonoff Temp. & Humidty Sensor SNZB-02P](https://sonoff.tech/product/gateway-and-sensors/snzb-02p/) (Zigbee)  
– [Sonoff Temp. & Humidty Sensor SNZB-02](https://sonoff.tech/product-document/gateway-and-sensors-doc/snzb-02-doc/) (Zigbee, EOL)