Prefer the model whose documented battery and recovery routine fits your household, not a guessed replacement interval.
A door lock is not a device you want to remember only when it stops responding. Before buying, read how the battery compartment opens, which batteries the exact model specifies and how warnings reach the responsible person.
U100 and U300 serve different door arrangements, so battery convenience cannot override fit. Once the correct hardware type is clear, compare the official maintenance instructions. Account for the owner who travels, the resident who cannot reach comfortably and anyone who will need help.
Avoid planning around an advertised maximum life alone. Usage, settings and conditions can differ. A simple periodic check and a supported fallback are a more useful purchase decision than promising a fixed replacement date.
Before you order
- Read the exact model's battery instructions.
- Keep the compartment accessible after fitting.
- Agree warning response and backup access.
A useful next step
Include a battery-service note when requesting the lock and installation scope.
Related equipment
Selling smart-home products? Planning a store in Canada or the US?
Talk with SmartAccess about product selection, a demonstration range, installation partners and project delivery. Retailers, dealers, installers and local store operators are welcome.
Product supply, training, service area, cooperation terms and any fees are confirmed in discussion. No revenue or lead volume is promised.
Manufacturer references
Product information comes from the linked manufacturer references. Confirm the exact regional model, seller, current price, stock and installation conditions before purchase.
