Amazon has the second generation August Smart Lock with HomeKit in dark gray for $193.71 (229.99 – 36.28 instant savings) with Free Shipping for a limited time. Amazon also it in silver in for $199.99 with Free Shipping for a limited time.

The August Smart Lock makes your smartphone a smart key—and more. Lock and unlock your door, create virtual keys for guests, and keep track of who comes and goes, all from your iOS or Android smartphone. Apple HomeKit support provides an easy, secure way to check your lock’s status, lock/unlock your door and control with Siri.