Latest News and Updates July 2019FirstAlert has launched the OneLink Secure, a mesh router that can link to its OneLink Safe and Sound smoke detector, and send out warning messages to devices on the network with screens such as smartphones, tablets, and TVs in the event of a smoke, fire, or carbon monoxide condition. The tri band 802. 11ac OneLink Secure Connect base station is $149, and should cover up to 2,500 square feet. A bundle with the base station and two satellites costs $329. It's not a smoke detector, but the Airthings Wave Plus $269 can detect Radon, CO2, TVOCs, humidity, temperature and air pressure. It connects to your phone via Bluetooth, so you'll have to be within range if you want to receive alerts. 99 View at eBay$115. 99View at Newegg Business$127. 65View at Amazon?Nest’s smoke alarm detects both smoke and carbon monoxide, and when it does pick up something, it will not only sound an alarm, but will also tell you in what room the alert is coming from, and the nature of the alert. An LED ring on the bottom of the alarm also changes color, giving you a visual cue. The Nest Protect comes in both wired and battery powered versions.