eufy Smart Lock C30 Review
Our verdict
The C30 demolishes the idea that smart locks must cost $200+. Built-in Wi-Fi means no bridge, the physical-button keypad works with gloves, and there's a real key backup. Battery life of ~5 months is respectable at this price.
Pros and cons
What we like
- Built-in Wi-Fi, no bridge required
- Physical keypad + physical key backup
- Under $80
What could be better
- No fingerprint reader
- IPX3 — sheltered installs preferred
Full specifications
| Security rating | Standard deadbolt replacement |
| Connectivity | Built-in Wi-Fi |
| Unlock methods | Keypad, app, physical key, Alexa/Google voice |
| Access codes | 100 |
| Auto-lock | Yes |
| Smart home | Alexa, Google Assistant |
| Battery | 4x AA (up to ~5 months) |
Compare with similar
Schlage Encode Plus
Grade 1 security with built-in Wi-Fi and Apple Home Key tap-to-unlock.
Best for: Best overall
ANSI/BHMA Grade 1 — best physical security rating
Built-in Wi-Fi, no hub needed
Premium price
Check price at AmazonYale Assure Lock 2 (Wi-Fi Touchscreen)
The compatibility champion — swappable modules speak every smart-home language.
Best for: Best compatibility
Swappable Bluetooth/Wi-Fi/Zigbee/Z-Wave/Matter modules
Apple Home Key support
Wi-Fi module sometimes sold separately
Check price at AmazonAugust Wi-Fi Smart Lock (4th Gen)
Smartens your existing deadbolt in minutes — renter-friendly, no keyway change.
Best for: Best for renters
Retrofits existing deadbolt — no rekeying
DoorSense open/closed detection
CR123 batteries last ~3 months
Check price at AmazonLast updated 2026-10-02. Price checked 2026-10-02 — confirm at the retailer.