Cannot setup home key on Aqara a100 door lock

Hello kandy2222,

After you have setup the lock in the Aqara Home app, you would use these steps to add it to the Home app on an iPhone:

Add the device to HomeKit (for iOS users)

There are two ways to add A100 to HomeKit:

1. Open Apple's Home app, click "+" in upper right corner, select "Add Accessory" 2. In the smart lock page in Aqara Home app, go to "General Settings", click "Bind with HomeKit", scan/input HomeKit setting code according to prompt (you can find your lock's HomeKit code after opening the battery compartment cover)

HomeKit supports functions such as lock/unlock, automation setups, and door unclosed/unlatched warnings.

Add Apple Home Key (for iOS users)

After your lock has connected with HomeKit, you can find an automatically generated key in your Apple Wallet app. iPhone/Watch can be used as devices to activate Apple Home Key by putting them into range of A100.

User Instructions:

1. This device works with HomeKit technology. Controlling this HomeKit-enabled accessory away from home or for automation would require an Apple Home hub, which is an Apple TV (generation 4 with tvOS 12.0+), an iPad (with iOS 12.0+) or a HomePod. An Apple user device, iPod/iPhone/iPad with iOS 12.0+ is also required. 2. In order to use Apple Home Key, your need an iPhone with iOS 15.0+ OR a Watch with watchOS 8.0+.

3. Use of the "Works with Apple HomeKit" badge means that an accessory has been designed to work specifically with the technology identified in the badge and has been certified by the developer to meet Apple performance standards. Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards.

You can find the full instructions for setup starting on page 10 of the user guide: Smart Door Lock A100 User Manual - Aqara

If you're encountering issues with the setup, you'd want to contact the manufacturer for assistance.

Cheers!