Top Smart Locks Under 100

Budget smart locks democratize home security technology, making keyless entry accessible to renters, homeowners, and small property managers. At this price point, you gain freedom from physical keys while enjoying features like remote monitoring, temporary access codes for guests, and automatic locking. These devices typically offer multiple entry methods—fingerprint, keypad, IC card, mechanical key, and app control—providing backup options if one method fails. For under $100, you can upgrade rental properties, secure interior rooms, or protect primary entries without the complexity and cost of professional hardwired systems. The category balances affordability with convenience, though you'll trade some advanced features found in premium models like Z-Wave integration or advanced weatherproofing.

When selecting a sub-$100 smart lock, prioritize access method diversity—look for locks offering at least 3-4 entry options (fingerprint, code, app, key) for reliability. Review authenticity matters: favor products with 15+ reviews over those with only 3-5, as more data points indicate consistent quality (e.g., the Lockzo with 52 reviews at 4.6 stars is more trustworthy than a 5.0-star product with just 3 reviews). Check connectivity type: WiFi-enabled locks (like eufy and Lockzo) offer remote control without hubs, while Bluetooth-only models require proximity. Installation compatibility is crucial—measure your door thickness and backset; most fit standard 1-3/8" to 2" doors. Security features to verify: anti-peeping passwords (decoy digits before/after code), auto-lock timing (5-120 seconds), and BHMA Grade 3 certification (like the eufy model). Battery life varies: 4 AA batteries typically last 6-12 months; avoid locks without low-battery warnings. Weather resistance matters for exterior doors—look for IP65 ratings, though many budget locks are best suited for covered entryways or interior use. Finally, consider handle vs deadbolt: handle-integrated models install easily but may lack the security of dedicated deadbolts.