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Wireless Add-on Video Doorbell with 2K Resolution, 2-Way Audio, Simple Self-Installation, HomeBase 2 Required. The clear 2k HD resolution combines with advanced WDR and Distortion correction, ensures video is recorded in 2.5x the clarity. The IP65 weatherproof rating ensures non-stop operation in extreme temperatures from -4°F to 122° F (-20°C to 50°C). Enjoy half a year of surveillance from just one charge. Recharge with ease so you always know who’s at your door. Install ...

Corentium Home is a small yet powerful radon gas detector. It provides exactly what you need to stay on top of your radon levels. Loved by thousands, a simple to use and wildly popular radon gas detector. Developed by our in-house CERN scientists, we are proud to offer a product which is accurate, simple and elegant. In short, Corentium Home is a detector for everyone. Every room in your home has different radon levels. With Corentium Home you can measure all rooms for the pr...