Life & fun · alternatives · 2026
24 alternatives to Alarm Keypad for Home Security System
Elegant Design with 5-year Lifespan Battery, 1900m LongRange
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites. Alarm Keypad for Home Security System launched in 2024; newer entries below may have overtaken it.
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- 3IMI made a tiny camera with super long battery lifefrom $200/mo▲843
Hey HN! A few years ago someone kept trying to steal my motorcycle, so I decided to make a small camera with really long battery life to catch them. The hardware/software is totally open source, but the companion app only supports macOS currently. (I'm a big fan of native apps, and didn't want to block releasing on Linux/Windows support.) I wrote some blog posts about the process: PCB design: https://toaster.llc/blog/pcb Enclosure design: https://toaster.llc/blog/enclosure Image pipeline:…
2024 · toaster.llc · its alternatives →
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World's First Residential Palm Recognition Smart Deadbolt
2024 · its alternatives →
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I made an alarm clock that blows up capacitors to wake you up. There are more details on the Github repo but it's made from an esp32-c3 as the microcontroller, with 3 capacitor slots. There are relays on each capacitor slot to put 15v reverse voltage on the capacitor, with 5.1 ohm resistors on each slot for current limiting in case the capacitor shorts out. I also chucked in an SSD1315 OLED to show the time and a menu to configure it, although there's a web UI as well. The esp32 also means you can fetch the time from NTP. It also functions as a small heater since I used LDOs to step down 15v…
Jun 2026 · github.com · its alternatives →
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TabTimer▲195The world's tiniest timer. Built for your browser.
2024 · tabtimer.net · its alternatives →
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HomeKit low battery notifications & widgets on iOS & watchOS
2024 · apps.apple.com · its alternatives →
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Control your door & give access through your smartphone.
2017 · its alternatives →
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Control who can('t) enter from your smartphone/computer.
2014 · its alternatives →
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Add network connectivity to your existing smoke alarm
2014 · its alternatives →
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Diversification of use scenes: bag, suitcase, door, etc.
2023 · its alternatives →
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Runs on one AAA battery which lasts up to one year
2017 · its alternatives →
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The Repairable and Fireproof DIY e-Bike Battery
2024 · indiegogo.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →