It will provide 24-hour heat and motion detector to protect your family's property and safety. A receiver can expand/handle up to 16 motion sensors to provide full coverage of your property.
By Quentyn Kennemer, a writer who helps The Verge's readers save money by surfacing the best tech deals and presenting the latest product recommendations from our experts. He has covered tech and ...
SINGAPORE – Discreetly stuck on a door or sitting on a shelf, a matchbox-size device called Birdhouse monitors the daily activity of seniors living alone. If it senses no movement for an ...