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Perhaps the most important thing we learned from our testing is that smoke detectors have a limited range, which is one of the reasons modern building codes require a unit in every bedroom as well as in areas adjacent to bedrooms. To test effectiveness, we sprayed test smoke from an aerosol can directly at each device and timed how long it took the alarm to sound. We sprayed the test smoke from 5, 10 and 15 feet away. Every detector sounded within 30 seconds at the 5 foot mark. Three smart smoke alarms –Nest Protect, Halo+ and First Alert Onelink – went off at the 10 foot mark. All but one of the smoke detectors, the Nest Protect, failed to detect dangerous levels of smoke at the 15 foot mark.home security cellular
The longest warranty we saw, found on both the Nest Cam and the Belkin NetCam HD+, is two years. More Home Security Guides:The Best Home Security SystemsThe Best DIY Home Security SystemsThe Best Whole Home Surveillance SystemsRelated Product ReviewsNest CamFlir FX FXV101 HD Link DCS 2630LSamsung SmartCam HD Pro SNH P6410BNNetgear Arlo Q VMC3040Belkin NetCam HD+ F7D7606OcoTend Secure Lynx Indoor Tend Secure Lynx Indoor Tend Secure Lynx Indoor With the Tend Secure Lynx Indoor Camera, you'll know when your friends and family are in your house immediately through facial recognition technology. Shop Amazon Doesn't expireNetatmo Welcome Indoor Security Camera Netatmo Welcome Indoor Security Camera Netatmo Welcome Indoor Security Camera The Netatmo Welcome Indoor Security Camera is known for its amazing artificial intelligence capabilities like facial recognition and pet detection. Shop Amazon Doesn't expireCanary All In One Canary All In One Canary All In One The Canary All In One is an indoor camera with a built in siren and environmental monitoring for your air's quality, humidity, and temperature. Shop Amazon Doesn't expireTend Secure Lynx IndoorTend Secure Lynx Indoor CameraTend Secure Lynx IndoorThe Tend Lynx is the most affordable option that we’ve seen for artificial intelligence. I have to be honest: at less than 60 dollars, I’m initially a little skeptical of the Lynx’s abilities. Sure, it’s got 1080p HD and two way audio. But can it get the job done when it comes to artificial intelligence?Surprisingly, this inexpensive little camera has facial recognition technology. I’ll admit that it’s not perfect as I move my face in different angles, the camera isn’t always able to recognize me. But for the price point, I’m pretty impressed. The Lynx camera is a great option for people who want facial recognition at an affordable price.