Works with your existing single-cylinder deadbolt. Keep your existing lock and keys. Easily attaches to your existing deadbolt, so everyone can still use their keys.Send guest keys from anywhere instantlyall from the August app. Grant access for a few weeks, a few hours, a few minutes. Be sure you are secure with Door Sense. Only August has Door Sense to tell you the door is completely closed and locked. Locks automatically as you leave and unlocks when you arrive. Install in about 10 minutes with just a screwdriver. Connect your August smart lock to Alexa to Lock, unlock and check lock status. Alexa can also provide notifications when your battery is running low so you can proactively replace them. The item "New, Sealed, August Smart Lock 3rd Gen Bluetooth v4.0 Door Sense Keyless -Silver" is in sale since Friday, May 22, 2020. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Door Locks & Lock Mechanisms". The seller is "kerinlau8" and is located in Spring Hill, Tennessee. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.