Core Control Functions
Remote On/Off Control: Remotely open/close the door via calls from authorized numbers, with no distance limitation—operable globally anytime, anywhere.
Free Call Trigger: The device automatically answers calls from authorized numbers and executes the on/off action on the first ring; the call itself incurs no charges, eliminating extra communication costs.
No Extra Hardware Required: No need to provide remote controls, physical buttons or access cards for users; operations can be completed solely via mobile phone, simplifying access management.
User Management Functions
Authorized Number Management: Supports adding/deleting authorized users via SMS commands, with a maximum of 200 authorized phone numbers configurable, suitable for large-scale access scenarios.
Time Period Permission Control: Valid usage time periods can be set for each authorized number, enabling fine-grained permission management to restrict access to specific time windows.
Caller ID Filtering: Built-in caller ID function automatically identifies and ignores unknown/unauthorized calls, effectively preventing illegal access and ensuring door access security.
Notification & Feedback Functions
Action Confirmation Notification: After the relay performs the on/off action, an SMS confirmation will be sent to the device owner or authorized caller, keeping you informed of access status in real time.
Customizable Confirmation Content: The content of the confirmation SMS can be freely edited by the user for personalized status feedback, adapting to different management needs.
Key Product Advantages
Cost-Effective & Convenient: No monthly fees, no network dependency, no need for complex wiring or additional access control hardware; just a standard SIM card to get started.
High Security & Reliability: Caller ID filtering and authorized number management prevent unauthorized access; stable relay operation ensures consistent access control performance.
Flexible Scalability: Supports up to 200 authorized users and time-period permissions, ideal for home, small businesses, rental properties, and industrial sites.
Easy Setup & Operation: Intuitive SMS-based configuration allows quick setup without professional technical knowledge; mobile phone-based control makes access management hassle-free.
Important Notes (for Compliance)
The device requires a user-provided SIM card. SMS notification fees are charged by the mobile operator, while the call-triggered action itself is free.
Initial setup requires SIM card installation, authorized number configuration, and SMS command setup.
