August locks fit perfectly over most single cylinder deadbolts and aren't much bigger than your original thumbturn. WORKS SEAMLESSLY WITH YOUR SMART HOME: Built-in Wi-Fi allows your lock to work with your favorite voice assistant, including Amazon Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings and more. AWARD-WINNING SMART LOCK YEAR AFTER YEAR: Voted CNET Editor's Choice two years in a row (2020/2021), Best Smart Lock by Good Housekeeping (2021), Best Smart Lock by Tom's Guide (2021). This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Smart Doorbells & Locks\Smart Door Locks".The seller is "cgelectronics16" and is located in this country: US. This item can be shipped to United States, Canada, Australia, Japan, China, Korea, South, Indonesia, Taiwan, South Africa, Thailand, Hong Kong, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Saudi Arabia, United Arab Emirates, Qatar, Kuwait, Bahrain, Malaysia, Brazil, Chile, Colombia, Costa Rica, Panama, Trinidad and Tobago, Guatemala, Honduras, Jamaica, Antigua and Barbuda, Aruba, Belize, Dominica, Grenada, Saint Kitts-Nevis, Saint Lucia, Montserrat, Turks and Caicos Islands, Barbados, Bangladesh, Bermuda, Brunei Darussalam, Bolivia, Ecuador, Egypt, French Guiana, Guadeloupe, Jordan, Cambodia, Cayman Islands, Sri Lanka, Macau, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Vietnam, Uruguay.