This Yale touchscreen deadbolt is the slimmest yet

Yale's Assure Lock SL looks better than all its predecessors, but Yale didn't change anything about the keypad itself.  

The interior side of the Assure Lock SL is still the bulky housing we're used to by now with smart locks. 

The Assure SL Lock works with the Yale Secure app, if the lock is fitted with an iM1 network module for Apple HomeKit. Zigbee and Z-Wave users do not have app access. 

The Assure Lock SL's keypad has audio settings for the keypad touchscreen, and the lock's menu includes voice guidance. 

Through the Yale Secure app, HomeKit users can check battery status, manage up to 25 PIN codes, see current lock status, customize lock settings, and add a new lock.

Several Yale locks can be connected to smart home platforms using network modules. These are available in Zigbee, Z-Wave and Homekit (iM1) versions. 

Network modules for Assure Lock SL slide into place above the batteries, inside the interior housing of the lock. 

Within the Yale Secure app or via the keypad, you can create up to 25 PIN codes. With a network module enabled, Assure Lock SL can accept up to 250 PIN codes. 

The Assure SL is powered by four AA batteries. There is a red indicator light for low battery power, and a pair of 9V jumpstart nodes for backup power.