Your front door is the gateway to everything you care about. The B2 turns that gateway into something smarter — without making you replace your existing door or drill weird holes.
A True Keypad Entry Lock for Your Front Door
Let us start with the basics. The B2 is a front door keypad lock that gives you multiple ways to get in. Type a 4 to 8 digit code on the key pad lock for door. The anti-peep scramble code means you can add random numbers before and after your real code. Anyone watching still cannot guess your password.
Prefer touch? The fingerprint sensor works in under a second. This fingerprint lock stores up to 120 fingerprints on TTlock or 100 on Tuya. That is enough for the whole family plus regular visitors.
You also get RFID cards for kids or older family members, a physical key for emergencies, and full app control. This is not just a keyless lock — it is a complete access system.
Electronic Peephole That Sees More
The B2 offers an optional electronic peephole with a 1MP camera. Unlike a traditional peephole, you do not have to press your eye against the door. Open the app and see who is outside. Check if a package arrived. See if the kids made it home. While video intercom is not supported, the peephole gives you a clear view whenever you need it.
Your Choice of Connectivity
Here is where the B2 gets really flexible. You can choose how you want to connect.
Prefer TTlock BLE? Use Bluetooth for nearby control, or add a gateway for remote access from anywhere. TTlock models also support Google Home for voice control in most countries.
Prefer Tuya? You get a choice of WiFi or Zigbee. WiFi gives you direct remote access without extra hardware. Zigbee connects to your existing smart home mesh for a more stable network.
Either way, this becomes a digital front door lock you can control from anywhere. Lock or unlock remotely. Share eKeys to family and visitors. Check the audit trail to see who accessed your door and when.
A Smart Lock with Passage Mode
The B2 is what you might call a smart smart lock — it adapts to how you live. Turn on passage mode and your door stays unlocked during the day. Perfect for moving furniture, hosting a party, or running a small shop. Turn it off at night, and full security returns.
The lock is built on a 60/70 mortise and fits a wide range of door prep sizes, including 5050, 5072, 5572, 6072, 4585, 6085, and 7054 mortise. Door thickness from 35mm to 60mm is supported.
Security You Can Count On
Security features go beyond just locking the door. Double verification mode requires two methods to unlock — fingerprint plus code, or card plus fingerprint. A tamper alarm sounds if someone tries to pry the lock open. Too many wrong attempts trigger a lockout and alert. The indoor lockout function gives you privacy when you are home.
Built to Last
The housing is aluminum alloy with a baking paint finish. It works in temperatures from -20°C to 50°C. Four AA batteries last about one year with normal use. A low battery alert warns you before they die. The USB-C port accepts emergency power from any power bank.
The Bottom Line
If you want a front door keypad lock that works as a fingerprint lock, a keyless lock, and an electronic front door lock — with your choice of TTlock BLE or Tuya WiFi/Zigbee, passage mode, and wide mortise compatibility — the B2 is the automatic front door lock your home deserves.