Smart locks

This retains the exterior lock rather than replacing the entire deadbolt; consult the compatibility list.

• Mounts on the inside of a compatible existing single-cylinder deadbolt; check August's deadbolt compatibility list first.
• Requires batteries, the August app on a supported phone and Wi-Fi internet. This is a retrofit installation, not just app pairing.

This replaces the deadbolt rather than retaining the existing exterior lock. Door preparation remains a separate check.

• Encode BE489 replaces the deadbolt; it does not retain the existing exterior lock like a retrofit accessory. Standard fit is a 1-3/8 to 1-3/4 inch thick door with a 2-3/8 or 2-3/4 inch backset (door edge to hole center). Measure before buying.
• This guided-setup assessment assumes a compatible, already-prepared door. Check the manufacturer's door-preparation guide and bolt alignment; door or frame alterations need a separate assessment. Ask a locksmith if unsure, and confirm any thick-door kit with Schlage rather than assuming it is included.
• The lock uses four AA alkaline batteries, not household hardwiring. Plan 2.4 GHz Wi-Fi coverage and Schlage Home app setup. These requirements concern Encode BE489, not Encode Plus; seller package contents and actual door fit have not been physically checked.

The YRD410/YRD420 guide covers lock replacement and module setup. It does not inspect the user's door or certify other Yale variants.

• This keyed YRD420 replaces the deadbolt, rather than retaining the existing exterior lock. Yale specifies 1-3/8 to 2-1/4 inch door thickness, 2-3/8 or 2-3/4 inch backset, and a 2-1/8 or 1-1/2 inch face bore. Verify the door and required adapter before buying.
• The guided-setup assessment assumes a prepared, compatible door and surface-mounted DoorSense. Flush mounting the sensor requires drilling; door or frame alterations need a separate assessment. Confirm smooth bolt movement and follow the manual's mounting checks.
• Use four AA batteries and the correct Wi-Fi module; remove batteries before inserting or removing a Yale Smart Module. Follow the Yale app setup, calibrate DoorSense and check open/closed readings. This is the standard keyed Assure Lock 2, not Touch, Plus or a key-free variant; the seller's hardware has not been inspected.