Their cheaper tags are not for freezers, at least for commercial low temp applications. But the more expensive ones work in freezers I have really only used these for refrigeration and monitoring access to liquor cabinets in a commercial environment. I user their apps and have some notifications via Pushover. https://pushover.net I have a back burner project to integrate their open/close switches with our Hue... - Source: Hacker News / 9 days ago

Checkout https://pushover.net/ I paid $5 once, years ago, and can push notifications to my phone from my custom little self-hosted stuff. - Source: Hacker News / 5 months ago

Am I understating this correctly … If you self-host & have more than 10 users, there is no option for you to use another push notification service (like https://pushover.net/) You either pay for zulip or don’t get push notifications. - Source: Hacker News / 6 months ago

Looks great, what differentiates ntfy.sh from https://pushover.net/ ? - Source: Hacker News / 7 months ago

So you’ve just set up OpenWRT with all the bells and whistles only to realize there is no out-of-the-box way to receive notifications for newly connected devices. No worries! With this tutorial, we will set up our OpenWRT server to send notifications to Pushover whenever a new device is connected to the server. - Source: dev.to / 7 months ago

Here's sort of the inspiration for what I'm going for: https://chrome.google.com/webstore/detail/tabby-cat/mefhakmgclhhfbdadeojlkbllmecialg. Source: almost 3 years ago