Dimensions: Height: 2.9 inches. Width: 2.9 inches. Length: 0.9 inches.
Weight: 14.1 ounces.
Requirements: Existing wired mechanical doorbell system, internet connection, the August Home app for iOS or Android, a Bluetooth® Smart Ready Phone, and 802.11b/g/n (2.4 GHz or 5 GHz) Wi-Fi® Network.
Power Requirement: 16-24V of electricity.
Compatible with iOS 8.2 or later or Android 4.4 or later.
Colors: Dark Gray and Silver.
Warranty: 1-year limited warranty.