Mortise Locks

Mortise Smart Lock with multi keyless accesses FM550

Get a finger scan door lock that does not overcomplicate things. Fingerprint works fast. The code door lock is great for guests. Connects to TTlock or Tuya for remote unlocking. A solid door password lock that belongs in any home with home door locks smart automation.

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Model	FM550
APP options	Tuya, TTLock // All TT models support Google Home. Among them, the United States, Australia, Canada, India, the United Kingdom, France, Italy and Brazil support Alexa.
Unlock methods	Smart phone, Fingerprint, password, RFID card, Key override
Wireless supported	TTlock：Bluetooth BLE (intenet available with gateway) Tuya: WIFI, Zigbee
Hilight Functions	Time-limited passcode Temporary passcode Supports remote unlocking
App compabilities	Unlock/Lock Enrol PIN codes, RFID and fingerprint credentials and make settings Share eKeys to family and visitors. Audit trail in the App to see who accessed your door and when.
Battery	4 X AA Alkaline Batteries - works up to 1 year (10 unlocks per day) Micro USB port for emergency power via power bank. Low battery alert
Security Features:	Incorrect attempt alert & lockout for added security. Anti-peep scramble code prevents the correct code from being seen Tamper alarm to prevent someone from prying and breaking the lock Indoor lockout function
Access Capacity	TUYA：100 fingerprint, card+ password+fngerprint=200 TT LOCK :120 fingerprint,1000 card,250 password 4-9 digits code length
Operation Modes	Passage Mode allows your door to remain open when required.
Physical Specs	Housing Material: Aluminum alloy Screen: Acrylic Finishing: Baking paint Work Temperature: -20℃-50℃ Door Thickness range: 38-50mm
Reliability & Durability	Salt Spray Test: 98H Unlock Test: 100,000 Cycles Certification: CE Waterproof rating:IP54
Dimention
Mortise Fit:	60/70 mortise、5050、5072、5572、 6072、4585、6085、7054
Packing & Contents
Inner box packaage	meas: 3718.712.7cm; G.W.: 2.3 KGS
Carton package	meas: 6738.539.5cm; G.W.: 17.6 KGS QTY:6 pcs/carton
What's in box	Instruction manual, drilling diagram, key, RFID card, lock body，accessories bag

Smart Lock Overview video FM880
Smart Lock User guide video FM880
Smart lock Installation guide video FM880

A Smarter Way to Secure Your Home

Your front door is the first line of defense for everything you care about. The FM550 turns that door into a smart home lock door without forcing you to drill new holes or hire a professional. It works with your existing door prep and gives you choices most locks do not.

Three Ways to Unlock

Let us start with how you get in. Place your finger on the sensor and this fingerprint smart lock reads you in under a second. Store up to 120 fingerprints on TTlock or 100 on Tuya — enough for the whole family plus regular visitors.

Prefer a code? The safe key pad lets you type a 4 to 9 digit passcode. The anti-peep scramble code means you can add random numbers before and after the real code. Anyone watching still cannot guess your password. This is not just a door password lock — it is a keypad lock safe that keeps your entry method private.

You also get RFID cards. Hand one to your kids. Give one to the dog walker. This key card door lock system is perfect for people who do not want to remember codes or use their phone every time.

And yes, there is a physical key override. Because sometimes simple is best.

A True WiFi Door Lock with Remote Unlocking

Here is where the FM550 gets really useful. This is a wifi door lock that supports remote unlocking through two different platforms. You choose what works for your home.

Prefer TTlock? Use Bluetooth BLE for nearby control. Add a gateway and you can unlock from anywhere in the world. TTlock also supports Google Home for voice control.

Prefer Tuya? You get a choice of WiFi or Zigbee. WiFi gives you direct remote access with no extra hardware. Zigbee connects to your existing smart home mesh.

Either way, this becomes one of those smart digital door locks that puts control in your pocket. Open the app from work, from vacation, or from the couch. Let in a repairman. Unlock for a delivery driver. Check if you remembered to lock up last night.

Time-Limited and Temporary Passcodes

The FM550 includes two features that make it perfect for electronic house door locks. Create time-limited passcodes that only work during certain hours — great for housekeepers or dog walkers. Create temporary passcodes that expire after one use — perfect for a one-time guest or delivery.

Passage Mode for Busy Days

Turn on passage mode and your door stays unlocked during the day. Great for moving furniture, hosting a party, or running a small shop. Turn it off at night, and full security returns. This is why the FM550 works as both a smart Front door lock and a front door lock.

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 Micro USB port accepts emergency power from any power bank.

Security features include incorrect attempt lockout, tamper alarm, and indoor lockout function for privacy when you are home.

Wide Compatibility

The FM550 fits multiple mortise sizes including 60/70, 5050, 5072, 5572, 6072, 4585, 6085, and 7054. Door thickness range is 38-50mm.

The Bottom Line

If you want a finger scan door lock that works as a code door lock, a wifi door lock, and a smart digital door lock — with remote unlocking, time-limited codes, and your choice of TTlock or Tuya — the FM550 is the electronic house door lock your home has been waiting for.

Frequency Ask Question

Q1 Is this lock waterproof?

-- No, but we have other waterproof model, such as FM581, FM582

Q1 Is this lock waterproof?

-- No, but we have other waterproof model, such as FM581, FM582

Q1 Is this lock waterproof?

-- No, but we have other waterproof model, such as FM581, FM582

Q1 Is this lock waterproof?

-- No, but we have other waterproof model, such as FM581, FM582

General FAQs

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Frequency Ask Question