aosu is a home security brand built around subscription-free video, selling battery and wired doorbell cameras, indoor and outdoor cameras and multi-camera kits. Its doorbells record locally to built-in storage or to a bundled base station rather than requiring a cloud plan, and pair 2K to 5K sensors with head-to-toe fields of view aimed at seeing packages on the doorstep. Devices are set up in the aosu app and work with Amazon Alexa and Google Assistant.
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Aranet, a brand of SAF Tehnika in Latvia, makes wireless sensors best known for the Aranet4 CO2 monitor. Its devices use long-range, low-power radio to track CO2, temperature, humidity and pressure, with long battery life and an E-ink display. Aranet is widely used in offices, schools and homes for reliable, accurate CO2 monitoring.
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