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Key Features
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Multi-Modal Access: Unlock via fingerprint, PIN code, NFC card (up to 25 cards), Bluetooth via app, mechanical keys, or temporary/virtual PIN. 
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In-Built Doorbell & NFC: Built-in doorbell adds convenience, NFC card unlock for fast access. 
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App Management (Mi / Mijia App): View door status, manage passwords & fingerprints, view lock history, get family-back-home reminders. 
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High Capacity Storage: Supports up to 30 fingerprint records, 50 password groups, 25 NFC cards. 
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Durable Build: Main body in aluminum alloy with stainless steel lock tongue; suitable for wooden or fire-proof doors. 
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Long Battery Life & Emergency Power: 8× AA batteries (6V) for regular power, Type-C port for emergency power. Standby time up to 12 months. 
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Adaptable to Doors: Fits doors of 40-120 mm thickness, supports both standard wooden/security/fire-proof doors. 
Specifications
| Specification | Details | 
|---|---|
| Model | Lockin S30 Pro | 
| Main Material | Aluminum alloy | 
| Lock Tongue Material | Stainless steel | 
| Encryption Chip | Mi encryption chip | 
| Dimensions | 385 mm (L) × 73 mm (W) × 22 mm (H); depth 70 mm including handle | 
| Door Thickness Compatibility | 40-120 mm | 
| Access Methods | Fingerprint (up to 30 users), PIN code (main & temporary), NFC card (25 cards), Bluetooth (Mi App), Mechanical Keys (2 pcs) | 
| Password / PIN Capacity | Up to 50 PIN/password groups | 
| Fingerprint Capacity | Up to 30 users/groups | 
| NFC Card Capacity | Up to 25 cards | 
| Standby Time | Up to 12 months | 
| Power Supply | 6V (8 × AA batteries) | 
| Emergency Power | Type-C input | 
| Applicable Door Types | Wooden door, fireproof door, security door etc. | 
| Additional Features | Built-in doorbell; temporary/virtual PIN; door status & history via app; family back-home reminders | 
 
  