9 Easy-Install Keyless Entry Upgrades for Back Doors and Side Gates

Upgrading back doors and side gates to keyless entry removes the daily friction of fumbling with keys in the dark or worrying about locked-out guests. With the right hardware, these secondary entry points become secure, accessible, and seamlessly integrated into a modern, low-maintenance lifestyle. Selecting the perfect lock requires matching your specific layout, security needs, and environmental exposure to the right technology.

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Choosing the Right Lock for Outdoor Weather Exposure

Back doors and side gates face much harsher environmental conditions than front entryways, which are often protected by porches or deep overhangs. Moisture, freezing temperatures, and direct sunlight can quickly degrade cheap electronics and cause mechanical parts to seize. Choosing a lock with a verified IP (Ingress Protection) rating of at least IP65 ensures the internal components remain dry and functional through heavy downpours.

Physical materials matter just as much as electronic weatherproofing. Look for locks constructed from heavy-duty marine-grade chrome, brass, or powder-coated zinc alloys that resist rust and salt-air corrosion. If a lock is destined for an uncovered wooden or metal garden gate, mechanical locks often outperform electronic ones by eliminating batteries that drain rapidly in extreme winter cold.

Smart Deadbolt – Schlage Encode Smart WiFi Deadbolt

A smart deadbolt serves as the primary line of defense for a back door, bridging the gap between robust physical security and modern convenience. The Schlage Encode Smart WiFi Deadbolt is the ideal choice for this role because it connects directly to your home network without requiring extra bridges or hubs. Its built-in WiFi makes it incredibly straightforward to monitor who enters and exits from anywhere using a smartphone.

The build quality is exceptionally rugged, featuring a Grade 1 security rating—the highest residential grade available. This means it can withstand significant physical force, while the fingerprint-resistant capacitive touchscreen ensures your entry code cannot be guessed by looking at wear patterns.

• Connection: Built-in Wi-Fi (no hub required)
• Security Rating: ANSI/BHMA Grade 1
• Power Source: 4 AA batteries
• Compatibility: Works with Amazon Alexa, Google Assistant, and Ring

Before purchasing, ensure your home Wi-Fi signal actually reaches your back door, as thick exterior brick or stucco walls can sometimes block the signal. This lock is perfect for those who want top-tier physical security and remote access tracking, but it may be overkill for a simple side door that only needs basic keypad entry.

Keypad Deadbolt – Kwikset SmartCode 913

For many homeowners, smart home apps and wireless connectivity add unnecessary complications to a simple daily task. A dedicated keypad deadbolt like the Kwikset SmartCode 913 provides keyless convenience using physical, tactile buttons rather than a touchscreen or phone app. This ensures reliable operation even when wearing heavy work gloves or during wet weather.

What sets this model apart is Kwikset’s SmartKey Security, which allows you to rekey the lock yourself in seconds without calling a locksmith. The physical buttons light up at the touch of a button, making evening entry painless and secure.

• Entry Method: 10-button backlit keypad and physical key
• Security Tech: SmartKey Security re-key technology
• Capacity: Up to 16 customizable user codes
• Auto-Lock: Customizable 30-second delay option

Keep in mind that this is a non-connected lock, meaning you cannot monitor it remotely or change codes when away from home. It is the absolute best fit for utility doors, garage entryways, or back doors where straightforward, reliable keypad access is preferred over smart home integration.

Retrofit Smart Lock – August Wi-Fi Smart Lock

Retrofit locks are designed to upgrade your existing deadbolt without changing the exterior hardware, preserving your home’s exterior aesthetic and matching key set. The August Wi-Fi Smart Lock attaches directly to the inside thumbturn of your current lock, leaving the outside keyway completely untouched. This means you keep your original keys for emergencies while gaining full smart control on the inside.

This sleek, circular device offers auto-unlock technology that detects your smartphone as you approach, unlocking the door hands-free. The DoorSense sensor lets you know if the door is actually closed and secure, rather than just locking while standing wide open.

• Installation Style: Retrofit (interior side only)
• Connectivity: 2.4 GHz Wi-Fi built-in
• Key Features: Auto-Unlock, Auto-Lock, and DoorSense technology
• Power: 2 CR123 batteries

Be aware that the interior unit is somewhat bulky and requires precise calibration during setup to prevent motor strain against your door jamb. It is the ultimate solution for renters, historic homes with specific design guidelines, or anyone who wants smart features without changing their exterior key style.

Keyless Entry Lever – Yale Assure Lock 2

Not all back doors are pre-bored for a separate deadbolt; many utilize a single combined knob or lever handle. The Yale Assure Lock 2 Keyless Lever replaces your entire handle set, providing a sleek, key-free entry solution that is incredibly easy to operate. Levers are generally much easier to depress with full hands than turning a traditional round doorknob.

This lock features a highly customizable modular design, allowing you to choose between Bluetooth-only operation or upgrading to Wi-Fi with a simple plug-in module. Its compact, modern design looks minimalist on any door, and the touchscreen keypad is highly responsive to light touch.

• Lock Type: Key-free lever handle
• Connectivity: Bluetooth (Wi-Fi and Z-Wave modules sold separately)
• Handing: Reversible (works on both left and right-handed doors)
• Backset: Adjustable 2-3/8″ or 2-3/4″

Ensure your door is properly aligned, as latch-style locks require a clean strike plate fit to latch securely without manual pushing or pulling. This lever is perfect for side garage doors, basement entries, or interior-to-garage doors where a deadbolt is not present.

Fingerprint Deadbolt – Ultraloq U-Bolt Pro WiFi

Biometric technology removes the need to memorize codes or carry a smartphone, making it the fastest way to unlock a door. The Ultraloq U-Bolt Pro WiFi features a highly accurate 360-degree fingerprint scanner built directly into the center of the keypad. It can register up to 100 different prints, allowing you to grant access to family, neighbors, and trusted contractors with a simple touch.

Beyond biometrics, this lock offers six different entry methods, including an anti-peep keypad, smartphone app, auto-unlock, and a hidden physical keyway. The sturdy construction and IP65 dust and water resistance ensure the exterior scanner remains operational in dusty backyards or during rainy seasons.

• Entry Methods: Fingerprint, Code, App, Auto-Unlock, Magic Shake, and Key
• Fingerprint Capacity: Up to 100 users
• Weather Rating: IP65 dust and water protection
• Connectivity: Built-in 2.4 GHz Wi-Fi

Wet, dirty, or extremely cold fingers can occasionally cause misreads on the scanner, though the keypad serves as an instant backup. This lock is ideal for busy households, gardeners who don’t want to carry keys, and anyone who appreciates quick, high-tech access.

Smart Lock Camera – Eufy Security Video Lock S330

Merging a video doorbell and a smart lock into a single device eliminates clutter on your doorframe and simplifies your home security setup. The Eufy Security Video Lock S330 combines a 2K resolution camera, a fast fingerprint scanner, and a smart keypad into one sleek unit. This allows you to visually verify who is at your back door before unlocking it remotely.

The camera features a wide 160-degree field of view and advanced AI human detection to reduce false alerts from passing animals or swaying trees. Best of all, it stores recorded footage locally on an included Chime, meaning no monthly subscription fees are required to view your security video history.

• Camera Resolution: 2K HD with night vision
• Storage: Local storage via included Wi-Fi Chime (microSD card required)
• Power: 10,000 mAh rechargeable lithium battery
• Biometric Speed: Under 0.3 seconds fingerprint recognition

Because the camera and lock share a single battery, you will need to recharge the large lithium pack every few months, during which the lock will temporarily lack smart power. This device is best suited for high-traffic back doors where monitoring deliveries or contractor access is a top priority.

Mechanical Gate Lock – Lockey USA 2835 Lever Lock

Side gates are rarely protected from the elements, making electronic and battery-powered locks highly susceptible to failure. A fully mechanical keypad lock like the Lockey USA 2835 Lever Lock relies entirely on springs and tumblers, requiring zero batteries or wiring. It provides dependable security for your yard in any climate, from freezing blizzards to scorching heatwaves.

This heavy-duty lock is made of weather-resistant materials and features a spring latch design with an easy-to-turn lever handle. It is designed to fit standard prep holes on doors and gates, making it highly versatile for metal, vinyl, or wooden gate installations.

• Operation: 100% mechanical (no batteries or electronics)
• Material: Weatherproof zinc-alloy construction
• Door/Gate Thickness: Fits doors 1-3/16″ to 2″ thick
• Passage Function: Mechanical passage mode allows the lock to remain unlocked when needed

Changing the user code on a mechanical lock requires removing the unit from the door and manually swapping out small metal tumblers, which is a slow and precise process. It is the perfect choice for outer perimeter gates, pool areas, and utility sheds where reliability under harsh weather is the absolute priority.

Double-Sided Gate Lock – Lockey USA M210

Standard gate locks only protect one side, leaving your yard vulnerable if an intruder can simply reach over or through the gate slats to turn the interior latch. The Lockey USA M210 Double-Sided Gate Lock solves this vulnerability by requiring a mechanical passcode to enter and exit. This double-sided security is essential for keeping pets and young children safely inside while keeping intruders out.

Like other Lockey models, the M210 is completely mechanical, meaning extreme weather will not compromise its performance. The compact deadbolt design is highly durable, utilizing a robust sliding deadbolt mechanism that resists prying and tampering.

• Security: Keypad entry and exit (double-sided)
• Lock Type: Manual sliding deadbolt
• Dimensions: Compact profile suitable for narrow stiles
• Finish Options: Available in satin nickel, jet black, and marine-grade finishes

Installing a double-sided lock on a thin wooden or metal gate often requires purchasing a specialized gate box or mounting bracket to align the mechanisms correctly. This lock is the definitive choice for pool gates, high-security perimeter gates, and properties with closely spaced gate slats.

Smart Padlock – Master Lock Outdoor Smart Padlock

Sometimes, installing a permanent lockset isn’t feasible or necessary, especially on chain-link gates, utility sheds, or storage lockers. A smart padlock like the Master Lock Outdoor Smart Padlock provides the flexibility of a traditional padlock combined with modern keyless control. You can unlock it using your smartphone’s Bluetooth connection or via a built-in directional keypad on the lock face.

This padlock features a heavy-duty boron carbide shackle and a durable weather cover designed to shield the internal electronics from rain, snow, and ice. The app allows you to share temporary or permanent access codes with guests or service providers, tracking precisely when the lock was opened.

• Shackle Diameter: 9/32″ (7mm) boron carbide shackle
• Access Methods: Bluetooth smartphone app or manual directional code
• Battery: Replaceable CR2 battery with active jump-start capability
• Weatherization: Protective silicone shroud and sealed internals

If the battery dies completely while the lock is closed, you will need to use an external 9-volt battery against the bottom contacts to “jump-start” the lock and input your code. This is a highly versatile option for securing shared utility areas, boat docks, or any gate that uses a traditional chain or latch.

Simple Installation Steps for Hassle-Free Setup

Upgrading to a keyless entry lock is a highly manageable DIY project that rarely takes more than thirty minutes per door. Most residential back doors use a standard bore hole of 2-1/8 inches in diameter, which accommodates almost all modern smart locks. Before unboxing your new lock, grab a standard Phillips-head screwdriver; avoid using a power drill, as it is easy to strip screw threads or damage delicate internal cables.

The most critical step in the installation process is measuring your backset—the distance from the edge of the door to the center of the bore hole. Most locks feature an adjustable latch that easily slides between 2-3/8 inches and 2-3/4 inches to match your door’s dimensions. Take a moment to verify that the door frame’s strike plate aligns perfectly with the latch, as even a minor misalignment will cause the lock motor to bind and drain the batteries prematurely.

Managing Access Codes and Battery Life with Ease

Once your keyless lock is installed, establishing a simple routine for managing access codes will maximize both security and convenience. Rather than giving everyone the same PIN, assign unique, four-to-six-digit codes to each family member, neighbor, or service provider. This allows you to track entry logs and easily revoke temporary codes—such as those for dog walkers or contractors—when they are no longer needed.

Battery maintenance is equally straightforward when approached proactively. Most electronic smart locks will flash a warning light or send a smartphone notification weeks before the batteries drain completely. Get into the habit of replacing your lock batteries annually—ideally in the autumn, as cold winter temperatures can rapidly sap remaining battery power. For added peace of mind, always keep a physical backup key hidden securely on your property or ensure your smart lock has external emergency terminals.

Conclusion

Upgrading your home’s secondary entry points with keyless locks eliminates the daily friction of managing physical keys while significantly boosting security. Whether you choose a high-tech biometric deadbolt for your back door or a rugged mechanical latch for your garden gate, these modern upgrades offer immediate, reliable convenience. Choose the lock that fits your specific environmental exposure and enjoy a streamlined, key-free lifestyle.