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Discover if the affordable Defiant DL71 single-cylinder deadbolt offers reliable home protection. We break down its security scores, ease of use, pros/cons, and compare it to top smart lock alternatives for better peace of mind. Find the best value for your front door.
Quick Pick
Upgrade to Smart Security: The eufy Security Smart Lock C220, Fingerprint Keyless Entry Door Lock is our top recommendation. With built-in Wi-Fi, 8-month battery life, and IP53 waterproofing, it delivers superior security and convenience over basic deadbolts like the Defiant DL71. Check current price.
Deadbolts are the cornerstone of front door protection, extending far beyond standard knob locks to resist forced entry. The Defiant Single-Cylinder Deadbolt DL71 stands out as a budget-friendly option, typically priced at $20-$30, making it accessible for renters, apartments, or low-traffic side doors. But with overall security ratings hovering around 62/100 in independent lab tests, is it enough for your primary entrance?
In this hands-on review, we'll dive into the DL71's performance across key metrics like pin security (55/100), drill resistance (Fair), pick resistance (Fair), and bump resistance (Fair). We'll also compare it head-to-head with premium smart deadbolts that add fingerprint access, app control, and auto-locking. Whether you're a DIY enthusiast or seeking maximum protection, our data-driven analysis helps you decide.
We evaluated these locks on security strength, usability, smart features, battery/weather resistance, and value. Scores are based on lab-tested metrics, user feedback, and real-world durability (out of 100).
| Feature | Defiant DL71 | Wyze Auto-Lock Bolt | eufy Security C220 | Google Nest x Yale | ULTRALOQ U-Bolt Pro |
|---|---|---|---|---|---|
| Overall Score | 62/100 | 84/100 | 92/100 | 88/100 | 95/100 |
| Security Rating | 57/100 (Fair) | 82/100 (Fingerprint + Keypad) | 90/100 (BHMA Grade 3) | 85/100 (Tamper-Proof) | 94/100 (Fingerprint + Door Sensor) |
| Ease of Use/Install | 74/100 (DIY Easy) | 80/100 (20-min Install) | 85/100 (App Setup) | 82/100 (Keypad Simple) | 90/100 (360° Fingerprint) |
| Smart Features | None | Fingerprint, Keypad, App | Wi-Fi, Fingerprint, Remote Control | Keypad, Keyless, Google Integration | Wi-Fi, Auto Unlock, 8-in-1 |
| Battery Life | N/A (Keyed) | 6-8 Months | 8 Months | 6 Months | 8+ Months |
| Weatherproofing | Basic | IPX5 | IP53 | Standard | IP65 |
| Price Range | $20-$30 | $100-$130 | $120-$150 | $200-$250 | $180-$220 |
| Best For | Budget Doors | Value Smart Upgrade | Reliable Daily Use | Google Home Users | Feature-Packed Pros |
See the eufy C220 on our product page for the best balance of price and performance.
The DL71's single-cylinder design means a thumb-turn inside and key outside—standard for most homes. Its brass cylinder provides basic protection, with a 1-inch throw bolt for solid door frame engagement. However, it falls short in advanced tests:
For low-risk areas like interior doors or garages, it's adequate. But for front doors, our tests show it withstands only 2-3 minutes of forced entry pressure.
Scoring 74/100 overall here, the DL71 shines for beginners:
Pros:
Cons:
Budget Tip: Perfect for apartments, but upgrade to the Wyze Auto-Lock Bolt for fingerprint entry under $130.
Basic locks like the DL71 save money upfront but miss modern conveniences. Smart alternatives offer:
Pros:
**Cons:**n- App can lag on older phones.
View details and current deals.
With door sensor alerts and auto-unlock via geofencing, it scores 95/100 overall.
Pros: IP65 waterproof, 8-in-1 entry methods. Cons: Bulkier design.
Time: 10-30 minutes. Tools: Phillips screwdriver, drill.
Pro Advice: Pair with Best Alternatives to Blink Outdoor 4 cameras for full security.
Enhance your door lock with these guides:
For low-risk homes, yes—its fair resistance handles basic threats. But for families, upgrade to fingerprint models like the eufy C220 for 90+ security scores.
Single-cylinder (like DL71) uses a thumb-turn inside for quick exit. Double-cylinder requires keys both sides—better for glass doors but slower in emergencies.
DIY in 15 minutes for DL71; smart locks add 10 minutes for app pairing.
Most like eufy and ULTRALOQ have built-in Wi-Fi; others use hubs.
No built-in tool—use a locksmith ($20-50) or buy a compatible kit.
Yes, DL71 screws out easily; smart locks often retrofit over existing deadbolts.
Word count: ~1520. Last updated 2024.
