Smart Lock for Aluminum Door Featuring 30mm Ultra Narrow Profile, Fingerprint Access and IP65 Waterproof FM231

Secure your property with the FM231, a smart lock for aluminum doors designed specifically for narrow frame and sliding glass door applications. At just 30mm wide, this ultra narrow smart lock is one of the slimmest options on the market, fitting door thickness from 30mm to 60mm. Whether you need a lock for aluminum sliding doors, patio doors, or storefront glass doors, the FM231 delivers reliable performance where standard 40mm locks simply cannot be installed.

The FM231 is rated IP65 waterproof, making it an ideal outdoor smart lock for aluminum doors exposed to rain, dust, and humidity. Whether installed on a villa gate, a balcony sliding door, or a commercial storefront that faces the elements, this weather-resistant lock delivers year round durability. The zinc alloy housing with baking paint finish is tested to 100,000 unlock cycles and 98 hours of salt spray protection. Operating temperatures range from -20°C to 50°C.

This keyless entry smart lock for aluminum doors offers five ways to unlock. Use your smartphone via the TTLock or Tuya app, touch the fingerprint sensor for instant access, enter a password on the keypad, tap an RFID card, or use the mechanical backup key for emergencies. As a fingerprint smart lock, it provides one-touch access for authorized users. With a generous capacity of 200 fingerprints, 1,000 RFID cards, and 250 passwords, this lock easily accommodates families, vacation rentals, and small businesses.

Connectivity is flexible. Choose between TTLock and Tuya platforms. TTLock works via Bluetooth BLE and supports remote access when paired with a gateway, plus voice control with Alexa and Google Home in select countries including the USA, Australia, Canada, India, the UK, France, Italy, and Brazil. Tuya offers built-in BLE connectivity. Through the app, you can lock or unlock remotely, manage user credentials, share eKeys with family or guests, and view the complete audit trail of who accessed your door and when.

This smart lock for aluminum doors also includes advanced security features. The anti peep scramble code lets you enter random digits before and after your real password, so no one can see what you typed. Other features include incorrect attempt alert and lockout to prevent brute force attacks, a tamper alarm that triggers when someone tries to pry the lock open, and a privacy switch that locks out all access except the administrator and override key. Passage mode allows you to keep the door unlocked during business hours, and double verification mode requires two methods to unlock for added security.

Power comes from 4 AAA alkaline batteries, lasting up to one year with typical use. A low battery alert warns you before power runs out, and the Micro-USB port accepts emergency power from any power bank.

Whether you need a smart lock for aluminum sliding doors for your home, a narrow frame smart lock for your apartment, or a waterproof smart lock for a commercial storefront, the FM231 delivers a super slim 30mm profile, IP65 weather resistance, and smart control that modern property owners demand.