Today only, A4C offers the Nest Secure Alarm System Starter Pack for $243 with free shipping. That is $6 under our mention from last December and is the lowest price we've ever seen. (It's the best we could find now by $56.) Buy Now Features Nest Guard base station with 85dB siren and motion detection up to 10 feet 2 Nest Detect door/window sensors with motion detection up to 15 feet 2 Nest Tags (with support for up to 10) 802.11n wireless & Bluetooth 4.0 remote access and security alerts via Nest mobile app