Overview
The EZVIZ DL01S (CS-DL01S) is a DIY inside-mount smart deadbolt adapter that fits on the inside of an existing deadbolt to provide keyless access and basic local smart features without replacing your current lock. It supports local Bluetooth unlocking and on-device features; full remote access, cloud notifications and multi-device control require the EZVIZ A3 Home Gateway (sold separately) using EZVIZ Connect (Zigbee).

• Quick, no-drill inside-mount installation — fits most standard deadbolts.
• Keyless access via EZVIZ app (slide-to-unlock), optional keypad (kit SKUs) and local Bluetooth.
• Auto-lock and configurable lock schedules; privacy / do-not-disturb mode available.
• User management with permanent and temporary PINs (keypad required for PIN entry if not using app).
• Door sensor (included with many SKUs) for auto-lock and status detection; built-in doorbell on some kits.
• Low-battery alerts; runs on 4×AA batteries (typical included in many packages).

Who it’s for
Homeowners and renters who want to add smart lock functionality quickly and without replacing their existing deadbolt. Suitable for DIY installation and for use with professional installations where the installer wishes to retain the existing cylinder.

Important notes & compliance

• Remote features (cloud access, push notifications, remote unlock) require the EZVIZ A3 Home Gateway; without the A3 gateway the product operates over local Bluetooth only.
• Check regional SKU contents — some bundles include a keypad and door sensor; others are single-unit packs.
• Certifications vary by region; typically CE / UKCA / RoHS / WEEE / REACH where applicable.

Safety & installation advice

• Install on the inside face of the door only; follow the official user manual for compatibility checks and step-by-step instructions.
• Do not attempt to force-fit the adapter; ensure your deadbolt type and clearance match the compatibility list in the manual.
• Keep emergency mechanical key access available — test functionality after installation and keep battery replacement in mind to avoid lockouts.