Altatac via Rakuten offers the second-generation Nest Protect Smoke & Carbon Monoxide Wired Alarm in White for $109.95. Coupon code "HOME20" cuts the price to $87.96. With free shipping, that's the lowest price we could find by $31, although we saw it for $9 less in our Black Friday mention. Deal ends June 24. Buy Now Features compatible with iOS and Android 802.11n wireless & Bluetooth 4.0 remote alerts via App Hush mode for false alarms motion sensor night light Model: S3003LWES