š Meet the F3257: Our Most Versatile Smart Lock Yet
- Jessica Zhang
- Jul 10
- 2 min read
Looking for a smart lock that does it all ā without looking like a clunky piece of tech glued to your door? The F3257 delivers serious security, sleek design, and five unlocking methods, all packed into a clean aluminum body.
Whether youāre managing a busy household, running a BNB, or just sick of key drama, this lock is built to make your life easier ā and smarter. With support for up to 100 fingerprints, 150 passcodes, 200 access cards, and the trusted TTLock app, the F3257 doesnāt just keep doors locked ā it keeps your people moving.
Simple to install, effortless to use ā the F3257 makes upgrading to smart access a breeze.

š¤ Who Itās For
This lock doesnāt play favorites ā but it does play smart.
The F3257 is perfect for:
š” FamiliesĀ
with kids, teens, visiting relatives, and the occasional dog walker
šļø Short-term rental hostsĀ
who want to grant access without messy key exchanges
š§āš¼ Shared housing or small office setupsĀ
that need access for lots of users
šÆ Anyone upgradingĀ
from an old-school lock who wants flexibility without the fuss
⨠What Makes It Awesome
ā App Control (TTLock)
Lock and unlock remotely, manage users, send eKeys, and view access logs ā all from your phone.
ā Fingerprint Unlock
Register up to 100 fingerprints for fast, key-free access.
ā Passcode Entry
Set time-based or permanent PINs for 150 users ā perfect for guests, cleaners, or housemates.
ā Mifare Card Unlock
Supports up to 200 NFC cards ā great for kids, older family members, or staff.
ā Mechanical Key Backup
Because sometimes old-school is the best backup plan.
ā Battery Powered (4 AA Batteries)
No wiring required. Get low-battery alerts through the app and enjoy months of hassle-free use.
š§ Easy Fit, No Door Drama
The F3257 uses a single latch mortise, making it ideal for most wooden doorsĀ (35ā65mm thick). No heavy drilling, no rewiring ā just a clean install and a fresh upgrade.
š§ It also works from -20°C to 70°C, making it ready for Irish winters andĀ heatwaves (on the three days we get them).
š§© Real-Life Use Case
You manage two short-term rentals.
Instead of running across town to hand off keys, you just send guests a passcode or eKey. They check in anytime, you get a notification, and after checkout? Boom ā revoke access instantly. Zero stress, all control.
š Specs at a Glance
Spec | Detail |
Material | Aluminum Alloy |
Color Options | Black, Silver, Copper |
Unlock Methods | App, Fingerprint, Passcode, Card, Key |
User Capacity | 100 fingerprints, 150 PINs, 200 cards |
App Connection | TTLock |
Power Supply | 4 Ć AA Batteries |
Door Thickness | 35ā65mm |
Lock Size | 153 Ć 63 Ć 20mm |
Temperature Range | -20°C to 70°C |
š¬ Final Thoughts
If you want a smart lock thatās actually smartĀ ā one that combines looks, functionality, and full flexibility ā the F3257 is your MVP. It's built for people who donāt want to choose between convenience and security.
š Ready to upgrade your door game?
or reach out for expert setup help in Cork and beyond.




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