# Digital lock cylinder Avatto SDL-S1-B90 90mm Black — biometric/electronic door cylinder

**URL:** https://aio.lv/en/product--avatto-sdl-s1-b90--10997461
**Data updated:** 2026-02-06 13:40 (EET)
**Category:** Control Systems
**Manufacturer:** Avatto
**Manufacturer code:** SDL-S1-B90
**EAN:** 6976037361459
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Avatto SDL-S1-B90 is a digital lock cylinder with a 90 mm length in black finish. Designed as an electronic/biometric door cylinder, it replaces a mechanical cylinder to provide keyless access control. Suitable for residential and commercial doors, it offers convenient user authentication and simplified door entry management while maintaining standard cylinder dimensions.

## Long description

Avatto SDL-S1-B90 digital lock cylinder (90 mm, black) is an electronic biometric door cylinder designed to replace a standard mechanical cylinder and provide multiple convenient access methods while maintaining standard cylinder dimensions. The device supports fingerprint recognition, IC card entry, remote control via the Tuya mobile app and a traditional mechanical key for emergency use. Its adjustable length and simple installation make it suitable for most residential and commercial doors.
Advantages
The cylinder offers four unlocking methods—fingerprint, IC card, Tuya app and mechanical key—providing flexibility for different users. Fast fingerprint recognition (0.3 s), low power consumption with CR123A battery supply and a low-battery alert improve day-to-day reliability. Bluetooth Low Energy connectivity enables app-based access control and viewing unlock history. The cylinder is made from durable materials, supports 360-degree fingerprint scanning and includes waterproof protection and a USB charging port for emergency power.
Suitable for (tasks / use cases)
Residential exterior and interior doors where standard cylinder replacement is needed
Small commercial premises requiring multiple access methods and remote management
Homes with family members of different ages—children, adults and seniors
Situations requiring emergency mechanical key access alongside electronic options
Key specifications
Unlocking methods: fingerprint, IC card, Tuya mobile app, mechanical key
Power supply: CR123A (alkaline) battery; USB port for emergency charging
Fingerprint recognition time: 0.3 s
Maximum number of users: up to 100
Connectivity: Bluetooth Low Energy (BLE)
Waterproof protection
Insert (cylinder) length: 90 mm
Overall dimensions: 170 × 100 × 80 mm
Weight: 0.55 kg
Color/finish: black
How to use
Install the Avatto SDL-S1-B90 cylinder using a hex screwdriver; installation typically takes about 10 minutes and does not require altering the door or frame structure. Adjust the cylinder length as needed to fit the door. Enroll fingerprints and register IC cards through the device interface or the Tuya app, and add users via the app for remote access control. Use the mechanical key only as an emergency measure.
Usage recommendations
Ensure the battery is a fresh CR123A alkaline cell and monitor the low-battery alert to avoid service interruption. Regularly back up access settings and review the unlock history in the Tuya app. For outdoor installations, verify the door hardware provides adequate protection from direct water exposure despite the cylinder’s waterproof rating. Follow the manufacturer’s instructions for fingerprint enrollment and cleaning to maintain reliable recognition.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Avatto products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Avatto service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10997461/61627111_large.webp