The Secure model and the S model locks are very similar, however, there are a few differences. You can disable the display of the Lockly Secure from the inside by using the ON/OFF switch, while the S models do not have this function. You can manually lock the Lockly Secure Latch edition from the inside by pressing the Lockly button on the interior assemble, while this button is disabled on Model 6S. You can lock from the inside using the Lockly app or wait for the auto lock timer to engage. The Lockly button on the interior assemble will light up red when the lock has a low battery, the Model 6S doesn’t have this feature.