# Temperatures in Pizzeria freezers 🥶

**URL:** https://discourse.nodered.org/t/temperatures-in-pizzeria-freezers/99041
**Category:** General
**Created:** [13 September 2025 18:11 UTC](https://discourse.nodered.org/t/temperatures-in-pizzeria-freezers/99041 "2025-09-13T18:11:48Z")
**Posts on this page:** 1
**Showing post:** 12

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### Author: ![PizzaProgram](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/pizzaprogram/32/19431_2.png) [@PizzaProgram](https://discourse.nodered.org/u/PizzaProgram)
#### Post date: [14 September 2025 12:36 UTC](https://discourse.nodered.org/t/temperatures-in-pizzeria-freezers/99041/12 "2025-09-14T12:36:12Z")

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I have [found](https://discourse.nodered.org/t/generic-sensor-processing-code/60421) on this forum so far only one possibility:

[Here](https://www.acurite.com/collections/indoor-outdoor-temperature-humidity) are 433MHz wireless temp readers.  
[This one](https://www.acurite.com/products/indoor-outdoor-temperature-humidity-sensor) is $20 and supports -40°C

But I haven’t found any **USB dongle** yet to receive the data. Also it seems to work on Linux only.

# one more consideration:

it would be nice (and logical) for the gateways to store those values for a while, if the PC/Tablet is offline or there is something wrong with the internet.  
15sec reading = `24 * 60 * 4 * (4+8) byte = 70 KiB / sensor / day `

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