Electronic lock cylinder V1 by Spreest is a clever solution that will allow you to turn an ordinary door into a smart access point, where in a second you let a guest in with a one-time code , without stress you give the cleaning team access "for tomorrow 10-12", and after successful unlocking (code, fingerprint, application) the lock activates the bolt mechanism for a specified period of time (5 seconds by default). This time can be freely changed in the TTLock application. After the set time has elapsed, the mechanism automatically switches to lock mode; turning the outer knob does not manipulate the bolt. Thanks to this, you don't have to remember to "re-lock" - the lock itself secures access after the authorization is completed. Ideal for Airbnb rentals, self-check-in hotels, warehouses, or offices, where guests can remotely receive a code or e-key valid only during specific hours. Built-in memory supports 50 cards, 100 fingerprints, and 50 PIN codes – plus unlimited e-keys in the app. No internet? No problem – the cylinder works locally and stores user data internally. Batteries last for approximately a year. When the battery starts to run low, the lock will warn you, leaving you time to replace it. The cylinder fits European standard locks, doors 35-75 mm thick – wooden, steel or aluminum Opening methods Fingerprint – quick entry thanks to fingerprint recognition. Mechanical key – the classic emergency option when the batteries are dead. Proximity card or key fob – touch the reader and it's ready. PIN code – enter your own code and enter without keys. Bluetooth and app – the lock opens with one click on your phone. Apple Watch App Capabilities Remote Control – open and configure the lock from anywhere (gateway required), without a gateway in Bluetooth range. Alerts and Event Log – push notifications + full opening history. Code Profiles and eKey – permanent, timed, cyclical or one-time guest access. Card, Remote, and Fingerprint Support – add and manage in a few clicks. OTA Updates – over-the-air firmware upgrades. Voice Integration – commands via Amazon Alexa and Google Assistant. Silent Mode – mute the lock beeps when you need silence. Additional features for businesses Integration with Booking, Airbnb, Hotres – automatic assignment of codes for online reservations. Multi-location panel – manage multiple locks and properties in one application. Roles and permissions – create groups (administrator, reception, service) with different access levels. Work Schedules – define office opening hours and grant access only at specific times. Attendance Reports – export entry/exit reports (late arrivals, early departures). “Freeze” Lock – temporarily disable all electronic opening methods (e.g., alarm). Bulk User Addition – import a list of employees or tenants from a CSV file. Wi-Fi Gateway → multiple locks – economical system expansion in a large facility. Cylinder Installation To make sure your door is ready for the cylinder, follow the two quick steps shown in the graphic. Installing the cylinder requires a mortise lock compatible with a standard European cylinder with a selector finger (so-called cam). Check if your lock has such a cylinder or purchase a suitable lock. Secondly, measure the thickness of the leaf – the line (1) marked on the graphic in blue should be within the range 35-75 mm. The set includes spacers 2 × 10 mm and 2 × 5 mm , thanks to which you can precisely expand the cylinder up to 90 mm, which is marked with a yellow line marked with the number (2) . Device components Numeric keypad and 13.56 MHz access card reader Internal lock knob Fingerprint reader Emergency power port USB-C, space for 3x AAA batteries, mechanical key input Specifications Power supply: 3 × AAA batteries (emergency USB-C input) Quiescent current: ≤ 75 µA Unlock methods: Mobile app, fingerprint, 13.56 MHz card, PIN, key Working current: ≤ 250 mA Unlock time: 0.3~1.5 seconds Communication: Bluetooth 5.0 Door thickness: 35-75 mm Color: Black Fingerprint capacity: 100 Card capacity: 50 Battery life: 8-12 months with 15 openings per day Cylinder dimensions: A - 30 mm, B - 30 mm, L - max. 90 mm (with additional spacers included) Code/password capacity: 50 Cylinder adapted to European doors FRR – false rejection rate: ≤ 0.15 % FAR – False acceptance rate: ≤ 0.00004 % Operating temperature: from –10 °C to + 60 °C The set includes 1x Electronic lock V1 TTLock Black insert 1x Mounting accessories for different door thicknesses (35-75mm) 1x Reset card 2x Mechanical key 2x Access card 1x User Manual . The manual in Polish is available in an electronic version as a downloadable attachment. You can find it either above or below our product description.