Ring Alarm Contact Sensor (2nd Generation)
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Security Grade
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Ring Alarm Contact Sensor (2nd Generation)
Brand: Ring (Parent: Amazon Inc.) Category: Smart Home Security Sensor • Model / Gen: 2nd Generation 5AT2S2 Release Date: 2021-09-01 • Status: In sale Classification Date: • Official Website | |
Contents
Security Evaluation
1. Device Security
| Criterion | Value | Proof | Comment |
|---|---|---|---|
| Known hardware tampering | Rare | 🔗 Proof | Built-in anti-tamper switch; triggers alert when opened |
| Known vulnerabilities | Rare | 🔗 Proof | Very few public vulnerabilities for this sensor module |
| Prior attacks | None | 🔗 Proof | No Mirai infection cases; attacks need access to the Z-Wave network |
| Updatability | Very common | 🔗 Proof | Firmware pushed remotely via Ring base station |
| Category Score | Score: 2 / 3 | ||
2. System Security
| Criterion | Value | Proof | Comment |
|---|---|---|---|
| Authentication with other systems | Partial | 🔗 Proof | Z-Wave secure pairing; authentication relies on the Ring base station |
| Communications | Encrypted with up-to-date encryption | 🔗 Proof | Z-Wave S2 encryption between sensor and base station |
| Storage | Encrypted with up-to-date encryption | 🔗 Proof | Minimal local state storage encrypted |
| Category Score | Score: 2 / 3 | ||
3. User Authentication
| Criterion | Value | Proof | Comment |
|---|---|---|---|
| Account management | Full | 🔗 Proof | Ring account with shared user access control |
| Authentication | Secure | 🔗 Proof | Ring account login + two-factor authentication support |
| Brute-force protection | Exist | 🔗 Proof | Rate limiting on Ring account login attempts |
| Event logging | Access event logged | 🔗 Proof | Door/window open, tamper and battery events logged in Ring app |
| Passwords | Require change after setup with complexity requirements | 🔗 Proof | Ring account enforces complexity rules for user passwords |
| Category Score | Score: 1 / 3 | ||
Technical Specifications
| Property | Details |
|---|---|
| Operating System & App | Ring embedded Z-Wave firmware (Companion App: Ring App) |
| Hardware (CPU / GPU) | CPU: Z-Wave embedded MCU • GPU: Not applicable |
| Memory & Storage | Memory: 32 KB RAM • Storage: 128 KB Flash |
| Power, Battery & Charging | Battery: 2 × CR2032 coin cell batteries • Power: 3V lithium coin batteries • Charging: Not applicable, disposable battery |
| Display & Camera | Display: None • Camera: None |
| Sound & Connectivity | Sound: Small alarm buzzer • Connectivity: Z-Wave, paired with Ring Alarm Base Station |
| Physical (Dimensions & Mass) | Dimensions: 53 × 28 × 14 mm • Mass: 18 g |
