LatviaAranet, 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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USAUbiquiti is a US networking company whose smart home relevance comes from its UniFi platform, spanning Wi-Fi routers, mesh systems, switches, security cameras (UniFi Protect), video doorbells and access control. Its gear is prized by enthusiasts for high performance, a unified local-first UniFi OS interface and no mandatory subscriptions. A fast, reliable UniFi network is a popular backbone for larger smart homes, though the ecosystem leans prosumer rather than plug-and-play.
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