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| NB-IoT Smart Water Meter
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Security Grade
Calculator v
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NB-IoT Smart Water Meter
Category: Utility IoT meter • Model / Gen: 1st generation NB-IoT remote reading water meter
Release Date: 2020-03-01 • Status: In sale
Classification Date: • [N/A Official Website]
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Security Evaluation
1. Device Security
| Criterion
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Value
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Proof
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Comment
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| Known hardware tampering
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Rare
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—
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| Known vulnerabilities
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Rare
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| Prior attacks
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None
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| Updatability
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Rare
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| Category Score
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Score: 2 / 3
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2. System Security
| Criterion
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Value
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Proof
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Comment
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| Authentication with other systems
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Full
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| Communications
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Encrypted with up-to-date encryption
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| Storage
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Encrypted with up-to-date encryption
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| Category Score
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Score: 1 / 3
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3. User Authentication
| Criterion
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Value
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Proof
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Comment
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| Account management
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Basic
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| Authentication
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Secure
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| Brute-force protection
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Exist
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| Event logging
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Access event logged
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| Passwords
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Require change after setup with complexity requirements
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| Category Score
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Score: 2 / 3
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Technical Specifications
| Property
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Details
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| Operating System & App
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FreeRTOS (Companion App: FreeRTOSCompanion AppWater utility management platform / resident mobile app)
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| Hardware (CPU / GPU)
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CPU: Low-power 32-bit MCU • GPU: None
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| Memory & Storage
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Memory: 256KB SRAM • Storage: 2MB Flash
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| Power, Battery & Charging
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Battery: Built-in non-replaceable lithium primary battery • Power: Battery-powered (10+ years service life) • Charging: No charging support
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| Display & Camera
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Display: Optional segment LCD for local reading • Camera: None
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| Sound & Connectivity
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Sound: None • Connectivity: NB-IoT
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| Physical (Dimensions & Mass)
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Dimensions: Typical: 165mm × 85mm × 60mm • Mass: 380 g
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This NB-IoT smart water meter is a utility IoT device. It automatically records water consumption, transmits meter data to the water management platform, and supports leakage detection and abnormal consumption alarm. It uses built-in long-life battery and NB-IoT cellular network.