Best Smart Lock Under 100
Browse all smart locks guidesSmart locks under $100 offer affordable home security without sacrificing key features like remote access, keyless entry, and smart home integration. This guide compares four budget-friendly options to help you find the best fit for your front door or indoor space.
Quick Comparison
| Product | Price | Rating | |
|---|---|---|---|
 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 |
 Foxgard Fingerprint Door Lock – 5-in-1 Biometric Smart Lock with Keypa... | $93.49 | ★★★★4.3 | View |
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
Foxgard Fingerprint Door Lock – 5-in-1 Biometric Smart Lock with Keypad, App Control, Key, Auto-Lock, Electronic Anti-Lock – Keyless Entry for Bedroom, Office, Indoor Use – Gold
Why this product type matters
Budget smart locks democratize home automation, allowing renters and homeowners to upgrade security without professional installation costs. For under $100, you gain convenience features like fingerprint access, smartphone control, and voice assistant integration that eliminate lost keys and unauthorized entry. These devices typically offer 4-5 unlocking methods, auto-lock functions, and real-time monitoring, making them ideal for busy households, rental properties, or securing home offices and bedrooms. The difference between a $65 and $95 model often comes down to biometric technology sophistication, WiFi vs. Bluetooth connectivity, and industry certification standards.
How to choose
Prioritize Connectivity: Choose built-in WiFi locks (eufy, Lockzo) for remote access without a hub; Bluetooth-only models (SMONET) require proximity but save power. Skip this step if you only need local keypad access.
Evaluate Biometric Technology: Palm vein recognition (Lockzo) works better for wet/dirty fingers and offers higher security than standard fingerprint sensors (SMONET, Foxgard). Check recognition speed (<0.5s is ideal) and user capacity (50+ fingerprints is standard).
Check Installation & Fit: Measure your door thickness (most support 1-3/8" to 2") and backset. All four models promise tool-free installation, but verify deadbolt compatibility with your existing setup. The eufy C30 includes a BHMA Grade 3 certification for durability—a rare find under $100.
Assess Smart Home Needs: If you use Alexa or Google Assistant daily, confirm voice control features (Lockzo includes this; Foxgard does not). Review app functionality: guest access scheduling, activity logs, and low-battery alerts separate basic from premium budget options.
Balance Reviews vs. Ratings: The eufy lock has 1,900+ reviews at 3.9 stars—extensive real-world feedback. Newer models like SMONET (17 reviews) and Foxgard (18 reviews) show strong 4.3-4.6 ratings but limited data. Consider whether you want proven mass-market performance or cutting-edge features from newcomers.
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Frequently Asked Questions
Do these budget smart locks work in extreme weather?
Most under-$100 smart locks are designed for indoor or covered outdoor use. The eufy Security Smart Lock C30 and Lockzo models are rated for front door installation with IP54 water resistance, handling temperatures from -20°C to 50°C. Foxgard specifies "indoor use," making it ideal for bedrooms or offices but unsuitable for exposed entry doors. Always check the IP rating and operating temperature range before buying for unprotected exterior doors.