Kevo Smart Lock, 2nd Gen features an all new, smaller and sleeker interior. The interior size has been dramatically reduced.
Kevo Smart Lock, 1st Gen dimensions: 7.4" x 3.25" x 1.75"
Kevo Smart Lock, 2nd Gen dimensions: 5.75" x 2.75" x 2"
Furthermore it is BHMA Grade 2 certified and UL listed for best residential security. Its interior also features a metal housing compared to the plastic housing of the Kevo Smart Lock, 1st Gen. The Kevo Smart Lock, 2nd Gen features a Bluetooth window that can be secured (optional) to prevent unauthorized access to the programming features for improved security. Optional 30 second Auto-locking is now also included. Overall Kevo Smart Lock, 2nd Gen is a much more refined and proven product compared to Kevo Smart Lock, 1st Gen.