When selecting a smart door lock for a door with a security screen door, it's crucial to measure the gap between the two doors. This gap will determine which type of lock is most suitable for your specific setup.

1. For doors with tight gaps between them, we recommend the Smart Deadbolt - Fingerprint Keyless Entry Fully Automatic Deadbolt Lock (SDL-T1). This lock is designed to fit well in situations where the gap between the two doors is minimal (gap should be more than 23mm).
2. Another option to consider is the Super Slim - Fingerprint and Keyless Entry Smart Mortise Lock [35mm wide] (SDL-SS1). With a shorter handle than most locks, this model may be a good fit for doors with slightly larger gaps between them (gap should be more than 52mm).
3. If you have a gap of more than 73mm between the door and the screen door, the Smart Compact - Fingerprint Keyless Entry Latch Lock (SDL-H1) or the Smart Medium - Fingerprint and Keyless Entry Mortise Lock (SDL-H2) could also be suitable options.

For a more personalized recommendation, feel free to contact us.