Upgrade to a sleek video recording doorbell and know who rings your doorbell when you are nesting away in your bedroom or on vacation. With the Energizer Smart Video Doorbell you can get live HD video on your smartphone that allows you to see, hear or speak to visitors at your front door with the Energizer Connect app. The Energizer Smart Video Doorbell connects to your existing doorbell wires for nonstop power without worrying about recharging batteries.