Best Cheap Smart Lock
Browse all smart locks guidesAffordable smart locks under $90 bring keyless convenience and enhanced security to any home without breaking the bank. This guide helps you navigate the trade-offs between price, features, and reliability to find the best budget-friendly option for your needs.
Quick Comparison
| Product | Price | Rating | |
|---|---|---|---|
 FITNATE Fingerprint Door Knob, Biometric Smart Lock with App Control, ... | $57.99 | ★★★★4 | View |
 Lockzo Smart Lock with Palm Vein, Keyless Entry Door Lock for Front Do... | $66.49 | ★★★★★4.6 | View |
 SMONET Smart Lock, Fingerprint Keyless Entry Door Lock Digital Electro... | $82.99 | ★★★★★4.6 | View |
 eufy Security Smart Lock C30, Keyless Entry Door Lock, Built-in WiFi K... | $89.99 | ★★★★3.9 | View |
 Smart Lock - Fingerprint Door Lock with Handle, Keyless Entry Door Kno... | $79.99 | ★★★★★5 | View |
FITNATE Fingerprint Door Knob, Biometric Smart Lock with App Control, Keyless Entry Door Knob with Bluetooth Digital Code, Touch to Open Knob for Bedroom,Home,Hotel,Office, Silver
Lockzo Smart Lock with Palm Vein, Keyless Entry Door Lock for Front Door, WiFi Electronic Door Lock with Keypad Deadbolt, Auto Lock, Voice Control, Compatible with Alexa & Google Assistant
SMONET Smart Lock, Fingerprint Keyless Entry Door Lock Digital Electronic Bluetooth Auto Locks with Touchscreen Keypad, Biometrics Smart Deadbolt Lock, App Control for House and Apartment
eufy Security Smart Lock C30, Keyless Entry Door Lock, Built-in WiFi Keypad Deadbolt for Front Door, No Bridge Required, Easy Installation, App Remote Control, Reliable Power, BHMA Grade 3
Smart Lock - Fingerprint Door Lock with Handle, Keyless Entry Door Knob with APP/Fingerprint/IC Card/Digital Code/Key, Electronic Keypad Deadbolt Lock for Home Hotel Bedroom Security, Auto Locks
Why this product type matters
Budget smart locks transform traditional doors into intelligent entry points, offering fingerprint access, remote control, and temporary guest codes at a fraction of premium brand prices. They eliminate the hassle of lost keys, allow you to monitor entry logs via smartphone apps, and provide automatic locking peace of mind—critical for rentals, home offices, or main entrances where convenience meets security. Modern budget options now include features once reserved for $200+ models, making smart home security accessible to renters and homeowners alike.
How to choose
Balance Reviews and Ratings: Look beyond perfect scores—products with 50-200+ reviews (like Lockzo at 4.6/52 reviews or eufy at 3.9/1,945 reviews) offer more reliable feedback than items with only 3-5 reviews. A 4.0+ rating with substantial review count indicates proven performance.
Prioritize Core Features: Under $90, focus on must-haves: reliable fingerprint sensor (most common), app control, and auto-lock. Premium features like "palm vein" scanning (Lockzo) or built-in WiFi (eufy) are bonuses but verify they don't compromise battery life or basic reliability.
Check Installation and Fit: Most budget locks fit standard 60mm doors, but measure your door thickness and backset. Knob-style (FITNATE) works for interior doors; deadbolt designs (eufy, Lockzo) are better for main entries. Confirm whether you need a separate hub for remote access—built-in WiFi (eufy) avoids extra cost.
Power and Durability: Budget locks typically use 4 AA batteries lasting 6-12 months. Check for low-battery alerts and physical key backup. For exterior doors, verify weather resistance ratings and BHMA Grade 3 certification (eufy) for minimum security standards.
Form Factor: Door knob styles (FITNATE, generic fingerprint lock) are ideal for bedrooms/home offices; deadbolt styles (Lockzo, SMONET, eufy) provide stronger security for front doors.
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Frequently Asked Questions
Are cheap smart locks secure enough for a front door?
Budget smart locks under $90 can be secure for main entrances if they include key features: BHMA Grade 3 certification (like eufy), AES encryption, and a physical key override. Prioritize deadbolt models over knob styles for exterior doors, and choose products with at least 50+ reviews and 4.0+ ratings to verify reliability. While they may lack advanced features like Z-Wave or higher security grades, they still exceed traditional lock convenience and logging capabilities.
Do I need WiFi connectivity in a budget smart lock?
WiFi enables remote unlocking and monitoring without a hub, valuable for granting guest access when away. Built-in WiFi (eufy) is ideal but may drain batteries faster—expect 6-8 months vs 10-12 months for Bluetooth-only models. If you only need local control or scheduled access, Bluetooth-only locks (FITNATE, SMONET) save money and battery life. For rentals or frequent travelers, WiFi is worth the small premium.