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HomeKit Weekly: The Onvis CS2 turns a simple door sensor into multiple use cases for Apple Home

February 13, 2026 at 07:14 PM
By Bradley C
HomeKit Weekly: The Onvis CS2 turns a simple door sensor into multiple use cases for Apple Home

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When automating your smart home, much of the attention centers on cameras and lights, but I believe HomeKit door sensors are arguably among the most critical devices to add to your setup. I’ve written about Onvis before, but the Smart Security Alarm Contact Sensor (CS2) takes the concept of a simple door sensor and turns it into a lot more. It supports Thread, but the really cool add-on here is a 120dB siren built right into the sensor. Let’s take a look at the Onvis CS2. more…

Analysis & Context

When automating your smart home, much of the attention centers on cameras and lights, but I believe HomeKit door sensors are arguably among the most critical devices to add to your setup. I’ve written about Onvis before, but the Smart Security Alarm Contact Sensor (CS2) takes the concept of a simple door sensor and turns it into a lot more. It supports Thread, but the really cool add-on here is a 120dB siren built right into the sensor. Let’s take a look at the Onvis CS2. more… This article provides comprehensive coverage and analysis of current events.

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When automating your smart home, much of the attention centers on cameras and lights, but I believe HomeKit door sensors are arguably among the most critical devices to add to your setup. I’ve written about Onvis before, but the Smart Security Alarm Contact Sensor (CS2) takes the concept of a simple door sensor and turns it into a lot more. It supports Thread, but the really cool add-on here is a 120dB siren built right into the sensor. Let’s take a look at the Onvis CS2. more…

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