Digital lock cylinder Avatto SDL-S1-S70 70 mm Silver, electronic door cylinder

Avatto SDL-S1-S70 digital lock cylinder (70 mm, silver) provides electronic access control for doors, replacing a standard mechanical cylinder. The cylinder supports fingerprint recognition, IC card, Tuya mobile app control and a traditional key for emergency access. Its adjustable length and simple installation make it compatible with the majority of residential and commercial doors that accept a 70 mm cylinder.

Advantages

The Avatto SDL-S1-S70 combines multiple unlocking methods in one compact insert, including fast fingerprint recognition (0.3 s) and BLE connectivity for app control. Installation requires only a hex screwdriver and about 10 minutes, without changing door or frame structure. The unit is powered by a CR123A alkaline battery with low-battery alerts and includes waterproofing and a USB charging port for added reliability.

Suitable for (tasks / use cases)

• Keyless entry for private homes and apartments
• Access control for small offices and commercial premises
• Households with children or seniors who need simple access methods
• Situations requiring remote access management and unlock history monitoring

Key specifications

• Unlocking methods: fingerprint, IC card, Tuya mobile application, traditional key
• Power supply: CR123A alkaline battery
• Fingerprint recognition time: 0.3 s
• Maximum number of users: up to 100 users
• Connectivity: Bluetooth Low Energy (BLE)
• Low battery alarm: yes
• Waterproof: yes
• USB charging port: yes
• Dimensions: 170 × 100 × 80 mm
• Insert length: 70 mm
• Weight: 0.55 kg
• Color: silver

How to use

Remove the existing mechanical cylinder and install the Avatto SDL-S1-S70 insert using a hex screwdriver; the adjustable length fits most doors and the full installation typically takes about 10 minutes. Enroll fingerprints and register IC cards directly on the device or add users via the Tuya mobile app using BLE connection. Use the Tuya app to manage user accounts, view unlock history and control access remotely. A traditional mechanical key remains available for emergency entry.

Recommendations

For reliable operation, use recommended CR123A alkaline batteries and keep the device firmware and Tuya app updated. Position the cylinder in a protected location to maintain waterproofing performance and periodically check the low battery notification to avoid unexpected power loss.