Core Control Functions
- Remote On/Off Control: Remotely open/close the door via calls from authorized numbers, with no distance limitation—operable globally.
- 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.
- No Extra Hardware Required: No need to provide remote controls or physical buttons for users; operations can be completed solely via mobile phone.
User Management Functions
- Authorized Number Management: Supports adding/deleting authorized users via SMS commands, with a maximum of 200 authorized phone numbers configurable.
- Time Period Permission Control: Valid usage time periods can be set for each authorized number, enabling fine-grained permission management.
- Caller ID Filtering: Built-in caller ID function automatically identifies and ignores unknown/unauthorized calls to ensure 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.
- Customizable Confirmation Content: The content of the confirmation SMS can be freely edited by the user for personalized status feedback.
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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.
