Digital smart lock Avatto SDL-A270-S Wi‑Fi, silver finish

Avatto SDL-A270-S is a Wi‑Fi enabled digital smart lock in a silver finish designed for door access control. It supports multiple unlocking methods, remote management via mobile apps and is suitable for residential and small commercial doors with thickness from 35 to 60 mm. The lock combines fast response, long battery life and weather resistance for everyday use.

Advantages

The lock provides five opening methods — fingerprint, IC card, password, mobile app and traditional key — with a fast opening time of 1–1.5 seconds. It supports user-specific and time-limited passwords and logs access events for monitoring. Built-in Wi‑Fi allows remote control and integration with Tuya Smart or SmartLife apps. Powered by four AA alkaline batteries, the unit offers an estimated battery life of 10–12 months and supports emergency external power. The housing and components are rated IP55 for resistance to rain and snow and operate across a wide temperature range.

Suitable for

• Residential front and interior doors (35–60 mm)
• Rental apartments and short-term rentals
• Small office and commercial premises
• Controlled access to storage rooms or service areas

Key specifications

• Materials: aluminum alloy, ABS, tempered glass
• Door thickness compatibility: 35–60 mm
• Power supply: 4 × AA alkaline batteries (6 V), external power input for emergency use
• Estimated battery life: 10–12 months
• Unlocking methods: fingerprint, IC card, password, mobile app, mechanical key
• Unlocking time: 1–1.5 s
• Connectivity: Wi‑Fi (supports Tuya Smart / SmartLife)
• Compatible OS: iOS 7.0+ and Android 4.4+
• Operating temperature: -20 °C to 50 °C
• Operating humidity: 10–95%
• Ingress protection: IP55

How to use

Install the Avatto SDL-A270-S on a compatible door (35–60 mm thickness) following the supplied installation guide. Power the unit with four AA alkaline batteries and set up the initial administrator profile using the touchscreen or included setup method. Connect the lock to your home Wi‑Fi and pair it with the Tuya Smart or SmartLife app on an iOS or Android device to enable remote control. Register fingerprints, IC cards and user passwords as required and assign time-limited or one-time codes for temporary access.

Recommendations

For reliable operation, use quality alkaline AA batteries and replace them before deep discharge. Keep the firmware and mobile app updated for security and compatibility. Use the mechanical key as a backup and configure time-limited passwords for guest or service access. If the battery is depleted, provide temporary external power (for example, powerbank) at the lock’s external power contact to restore operation.