9 Best Bike Locks With Alarms for 2026 (Deter Thieves)
You want a bike lock that fights back, and these top 9 alarm-equipped locks deliver.
With loud 110dB to 130dB alarms, weatherproof designs, and smart triggers, they scare off thieves fast.
Choose from chain, U-lock, disc, or cable styles—all with remote control, solid build, and long battery life.
Tough materials, IP ratings, and adjustable sensitivity keep your ride safe in any condition.
You’ll find the perfect mix of power, convenience, and theft deterrence waiting just ahead.
Quick Overview
- Loud alarms (110–130dB) deter thieves by drawing attention and signaling tampering attempts.
- Weatherproof designs (IP55/IP66) ensure reliable performance in rain and outdoor conditions.
- Motion or vibration triggers with adjustable sensitivity reduce false alarms while catching real threats.
- Remote controls with 40–66 ft range allow convenient arming, disarming, and bike locating.
- Rechargeable or long-life batteries with status alerts maintain security without frequent maintenance.
| Wsdcam 113dB Wireless Bike Alarm Waterproof |  | Best Overall | Alarm Volume (dB): 113dB | Waterproof Rating: IP55 | Lock Type: Wireless vibration alarm (no physical lock) | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 130dB Alarm |  | Most Secure Pick | Alarm Volume (dB): 130dB | Waterproof Rating: IP66 | Lock Type: Chain lock with mini U-lock | VIEW LATEST PRICE | Read Our Analysis |
| Heavy Duty Anti-Theft U Lock for E-Bikes |  | Heavy-Duty Choice | Alarm Volume (dB): Not explicitly stated (high-pitched) | Waterproof Rating: Weatherproof / weather resistant | Lock Type: U-lock | VIEW LATEST PRICE | Read Our Analysis |
| Alarm Disc Lock Set with 5ft Cable |  | Top Value Set | Alarm Volume (dB): 110 dB | Waterproof Rating: Waterproof | Lock Type: Disc lock with cable | VIEW LATEST PRICE | Read Our Analysis |
| Nulock Bluetooth Smart Bike Cable Lock |  | Smart Tech Pick | Alarm Volume (dB): 110 dB | Waterproof Rating: IP44 | Lock Type: Cable lock | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 110dB Alarm |  | Best Portable Lock | Alarm Volume (dB): 110 dB | Waterproof Rating: Waterproof | Lock Type: Chain lock | VIEW LATEST PRICE | Read Our Analysis |
| Mengshen Bike Lock with Remote & Alarm |  | Keyless Convenience | Alarm Volume (dB): 115dB | Waterproof Rating: IP55 | Lock Type: Cable lock with remote/password | VIEW LATEST PRICE | Read Our Analysis |
| YOHOOLYO Alarm Disc Lock for Motorcycles |  | Compact Security | Alarm Volume (dB): 110 dB | Waterproof Rating: Waterproof | Lock Type: Disc lock | VIEW LATEST PRICE | Read Our Analysis |
| WSDCAM Bike Alarm with Remote (2-Pack) |  | Best 2-Pack Deal | Alarm Volume (dB): 113dB | Waterproof Rating: IP55 | Lock Type: Wireless alarm (no physical lock) | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Wsdcam 113dB Wireless Bike Alarm Waterproof
Looking for a theft deterrent that works as hard as you do? The Wsdcam 113dB Wireless Bike Alarm’s got your back. It fits bikes, e-bikes, motorcycles, and scooters, thanks to its rugged, IP55-rated waterproof design. You’ll tweak sensitivity across 7 levels and pick from 3 volume settings to match your ride. When vibration or motion hits, it screams at 113dB—plenty loud to scare off thieves. Use the remote up to 66 ft away to arm, disarm, or trigger the vehicle search with one of three alert tones. You get reliable, battery-saving tech backed by proven sensor performance. It’s built tough, works smarter, and keeps your ride safe without fuss.
- Alarm Volume (dB):113dB
- Waterproof Rating:IP55
- Lock Type:Wireless vibration alarm (no physical lock)
- Remote Control:Yes
- Power Source:Battery (included, model not specified)
- Compatibility:Bikes, e-bikes, motorcycles, scooters
- Additional Feature:7-level sensitivity adjustment
- Additional Feature:Vehicle search function
- Additional Feature:Battery saving technology
Bike Chain Lock with 130dB Alarm
Who needs maximum security without sacrificing flexibility? You do—and this 8mm hardened steel chain lock delivers. At 3.3FT, it’s long enough to secure your bike, e-bike, scooter, or gate to a post or railing with room to spare. The 130dB alarm screams when vibration triggers it, scaring off thieves, especially when you lock the mini U-lock to your wheel or disc brake. It’s got silent mode too, if you prefer discretion. Built tough with heat-hardened steel, it resists cutting and rust. IP66-rated, it won’t fail in rain. Three keys, a tamper-proof cylinder, and a 519g heft mean only you get access.
- Alarm Volume (dB):130dB
- Waterproof Rating:IP66
- Lock Type:Chain lock with mini U-lock
- Remote Control:No
- Power Source:Not specified
- Compatibility:Bicycle, motorcycle, scooter, gate
- Additional Feature:Patent lock cylinder design
- Additional Feature:Silent mode option
- Additional Feature:3 integrated keys included
Heavy Duty Anti-Theft U Lock for E-Bikes
Need serious protection for your e-bike in high-theft areas? This heavy-duty anti-theft U lock’s got your back. With a 16mm hardened stainless steel shackle, it resists bolt cutters, leverage attacks, and hand tools. The motion-activated, high-pitched alarm deters thieves before they act. Built for e-bikes, scooters, and motorcycles, it fits wide tires thanks to its 5×6 inch (20×4) opening. Weatherproof and tough, it handles any condition. You get three keys for backup and convenience. Lock it up in public spots with confidence—your gear stays secure and within hearing range. Peace of mind? Absolutely. This lock doesn’t just protect—it warns.
- Alarm Volume (dB):Not explicitly stated (high-pitched)
- Waterproof Rating:Weatherproof / weather resistant
- Lock Type:U-lock
- Remote Control:No
- Power Source:Not specified
- Compatibility:E-bikes, scooters, motorcycles
- Additional Feature:16mm thick shackle
- Additional Feature:Resists bolt cutters
- Additional Feature:3 keys included
Alarm Disc Lock Set with 5ft Cable
Want serious security for your motorcycle, e-bike, or scooter with a quick, reliable alarm trigger? Use the RUBY.Q Alarm Disc Lock Set—it’s got your back. This LK-603 model packs a 110 dB alarm that screams when it senses vibration, plus a rugged 6 mm steel pin to block tampering. It locks right onto disc brakes up to 6 mm and stays tough in rain or shine. Just press one button to arm it. The included 5 ft reminder cable adds visibility, while the carry pouch keeps things tidy. You get two keys, an Allen wrench, and 12 LR44 batteries. Weighing just 0.39 kg, it’s light but serious—perfect for outdoor parking.
- Alarm Volume (dB):110 dB
- Waterproof Rating:Waterproof
- Lock Type:Disc lock with cable
- Remote Control:No
- Power Source:6× LR44/AG13 batteries (6 included + 6 backup)
- Compatibility:Motorcycles, bicycles, scooters, electric cars
- Additional Feature:6 mm lock pin
- Additional Feature:One-press operation
- Additional Feature:6 backup batteries included
Nulock Bluetooth Smart Bike Cable Lock
Looking for a lock that turns heads and deters thieves before they even touch your ride? Meet the Nulock Bluetooth Smart Bike Cable Lock. You control it via app—no keys, just tap-to-lock on iOS or Android. Its 47-inch braided steel cable wraps around bikes, scooters, or strollers with ease. A 110 dB alarm screams if someone vibrates, cuts, or tampers with it—unless your phone’s connected. Weatherproof (IP44) and tough down to -14°F, it runs five months on three AAA batteries. The app even alerts you when power drops below 20%. You’ll secure rides from e-bikes to snowboards, all with smart, keyless peace of mind.
- Alarm Volume (dB):110 dB
- Waterproof Rating:IP44
- Lock Type:Cable lock
- Remote Control:Yes (via Bluetooth app)
- Power Source:3× AAA batteries
- Compatibility:Bikes, motorcycles, strollers, gates, scooters, snowboards
- Additional Feature:App-controlled locking
- Additional Feature:No keys required
- Additional Feature:Low-battery app alert
Bike Chain Lock with 110dB Alarm
What if your bike lock didn’t just secure your ride but actively scared off thieves? The eMjollRay Bike Chain Lock with 110dB alarm does exactly that. You get a 4 ft, 8 mm hardened steel chain wrapped in a reinforced fabric sleeve, plus a loud, motion-triggered alarm with two sensitivity levels. You can adjust volume or disarm it using the rechargeable remote. It runs on a built-in USB-C rechargeable battery, lasting up to 60 days on standby. Waterproof and tough, it protects bikes, scooters, or gates. You also get two remotes, keys, and a storage bag. Green, rugged, and smart—it’s security that fights back.
- Alarm Volume (dB):110 dB
- Waterproof Rating:Waterproof
- Lock Type:Chain lock
- Remote Control:Yes (rechargeable remote)
- Power Source:1× Lithium Polymer (rechargeable)
- Compatibility:Bicycles, e-scooters, motorcycles, gates
- Additional Feature:USB-C rechargeable
- Additional Feature:60-day standby time
- Additional Feature:Reinforced fabric sleeve
Mengshen Bike Lock with Remote & Alarm
The Mengshen Bike Lock with Remote & Alarm is a solid pick for urban riders who need a lightweight, versatile lock that doubles as a theft-deterrent alarm system. You can lock and unlock it with the remote or a 4-digit password—no keys needed. The 31-inch cable suits bikes, scooters, strollers, and more. It triggers a loud 115dB alarm if someone moves, cuts, or tampers with it. Built with IP55 waterproofing, it handles rain and rust. It runs on 3 AAA batteries, with low-power alerts. The remote works up to 40 meters. Weighing just 9.3 ounces, it’s easy to carry. You’ll find it reliable, simple, and backed by solid reviews.
- Alarm Volume (dB):115dB
- Waterproof Rating:IP55
- Lock Type:Cable lock with remote/password
- Remote Control:Yes (remote & password)
- Power Source:3× AAA batteries
- Compatibility:Bicycle, motorcycle, gate, fence, stroller, scooter
- Additional Feature:Password unlock option
- Additional Feature:4-digit code support
- Additional Feature:Low battery du-du alert
YOHOOLYO Alarm Disc Lock for Motorcycles
Need serious protection for your motorcycle without sacrificing convenience?
The YOHOOLYO Alarm Disc Lock delivers.
You get a tough, all-metal, waterproof lock with a 7 mm locking pin that fits any wheel.
Its 360-degree adjustment ensures a snug fit on motorcycles, scooters, or bikes.
A motion sensor triggers a loud 110 dB alarm after a 5-second delay, scaring off thieves.
It runs on 6 internal and 6 backup batteries for long-term reliability.
You also get 2 security keys, an Allen wrench, and a carry pouch.
Everything comes in a secure box—ready to protect your ride fast and effectively.- Alarm Volume (dB):110 dB
- Waterproof Rating:Waterproof
- Lock Type:Disc lock
- Remote Control:No
- Power Source:6× internal batteries + 6 backup
- Compatibility:Motorcycles, bicycles, scooters, dirt bikes
- Additional Feature:360-degree pin adjustment
- Additional Feature:5-second alarm delay
- Additional Feature:Allen wrench included
WSDCAM Bike Alarm with Remote (2-Pack)
Looking for a loud, versatile theft deterrent that works beyond just your bike? The WSDCAM Bike Alarm with Remote (2-Pack) delivers up to 113dB of ear-piercing sound with three volume levels to match your environment. You can adjust the sensitivity across seven levels, so it reacts to anything from a light touch to heavy impacts. With IP55 waterproofing, it handles rain or shine. Use it on bikes, e-bikes, scooters, cars, or even luggage. The remote gives you 66 ft of wireless control and helps you find your ride in a crowded lot. Choose from three alert tones and install it quickly with adhesive or straps—no hassle.
- Alarm Volume (dB):113dB
- Waterproof Rating:IP55
- Lock Type:Wireless alarm (no physical lock)
- Remote Control:Yes
- Power Source:Battery (included, model not specified)
- Compatibility:Bikes, e-bikes, motorcycles, scooters, car, trailer, luggage
- Additional Feature:2-pack value set
- Additional Feature:3 kinds of bells
- Additional Feature:Strap/tie installation option
Factors to Consider When Choosing a Bike Lock With Alarms
You’ll want to check the alarm’s volume so it’s loud enough to scare off thieves and grab attention.
Make sure the sensitivity settings are adjustable, so bumps from wind or passing cars don’t trigger false alarms.
Also, look for weather resistance, a reliable power source, and a remote that works from a distance.
Alarm Volume Levels
How loud should your alarm be—loud enough to stop a thief, or quiet enough to avoid disturbing the neighbors? Choose a bike lock with an alarm between 110 dB and 130 dB. At 110–113 dB, the alarm cuts through street noise without being overwhelming. If you want maximum deterrence, go for 130 dB—it’s piercing and hard to ignore. Many models offer three volume levels, so you can adjust based on your environment. Use higher settings in busy areas, lower ones in quiet neighborhoods. Check if the lock includes a silent or low-volume mode for nighttime or stealth use. Don’t sacrifice effectiveness for discretion—or vice versa. The right volume stops thieves but won’t annoy your building mates. Test the sound if possible, and pick a lock that balances power with practicality where you ride and park.
Sensitivity Adjustments
Why do some bike locks scream at every bump while others stay silent during an actual break-in attempt? The answer lies in sensitivity adjustments. You can fine-tune most alarm locks across multiple levels—some offer up to seven—so you control how they respond to vibrations or motion. Set it too high, and gusts or passing trucks might trigger false alarms, making your lock less reliable. Too low, and a thief could jiggle it without setting off a sound. The best models let you adjust both vibration and motion sensitivity independently, giving you full control over protection. Always test the settings where you usually park. That way, you’ll catch real threats without annoying every passerby. Getting this balance right means your lock stays smart, not just loud.
Weather Resistance
Durability starts with defense against the elements. You need a lock that won’t fail when it rains or during sudden temperature swings. Look for IP66 or IP55 ratings—they mean solid protection from dust and water spray. If it’s labeled waterproof or weatherproof, you’re safer riding through downpours or leaving your bike outside. Opt for models with 360-degree weather resistance and rust-proof materials to prevent corrosion over time. Sealed battery compartments keep moisture out, while corrosion-resistant components ensure long-term reliability. Check the operating range too; a rating like -10°C to 60°C means your lock works whether it’s freezing or scorching. Don’t assume all alarms are built for outdoor use—many aren’t. Pick one engineered to handle humidity, rain, and extreme temps. Your lock should survive every season without skipping a beat.
Power Source Type
What keeps your alarm lock ready when you need it most? The power source. Most alarm locks run on built-in batteries—alkaline, lithium, or rechargeable—or replaceable coin cells, each affecting how often you’ll swap or top them up. If you go for a USB-C rechargeable model, you’ll usually get up to 60 days of standby time, which cuts down on the hassle. But don’t forget: if the battery fades, so does your lock’s response and remote reliability. Combo units like disc and chain alarms might need multiple batteries—or even backups—to keep both locking and alert systems running, especially in tough weather. That’s why a solid IP-rated, weatherproof design matters: it shields the battery from rain and corrosion, preventing premature drain or failure. Choose a power type that matches your usage, and you’ll stay powered when it counts.
Remote Control Range
How far can you stand from your bike and still control the lock? Most alarm locks offer a remote range between 40 meters and 66 feet, with top models reaching up to 40 meters in open areas. That extra reach comes in handy when you’re unlocking from a distance or arming the alarm while walking away. Look for a lock with a reliable stated range so you can compare options for your needs. Keep in mind, obstacles like walls or cars, signal interference, and weak batteries can cut that range short. Some models include a handy locate or vehicle search feature, letting you trigger lights or sounds remotely to find your bike fast. Check the specs—urban riders may face more interference, while open rural spots let you use the full range. Pick a lock that matches your parking reality.
Frequently Asked Questions
How Long Do Bike Alarm Batteries Typically Last?
They usually last 6 to 12 months, depending on usage.
You’ll replace them more often if the alarm triggers frequently.
Check monthly, and always keep spares so you don’t risk being stranded with a dead battery slowing your ride.
Can Bike Alarms Be Triggered by Heavy Rain?
No, bike alarms won’t blare from heavy rain; they’re built to brave storms.
You’ll find them tough, true, and not tricked by thunderstorms or downpours—only tampering triggers their sharp, startling shout.
Are Wireless Bike Alarms Easy to Install?
Yes, you’ll find wireless bike alarms super easy to install—just attach them to your frame with adhesive or zip ties.
You won’t need tools, and setup usually takes minutes.
They pair fast, stay discreet, and you’re ready to roll in no time.
Do Bike Alarms Work in Noisy Urban Areas?
You bet they cut through the noise—bike alarms work just fine in busy cities.
Even with traffic and crowds, that piercing siren grabs attention and makes thieves think twice in a heartbeat.
Can I Disable the Alarm Temporarily Without Unlocking?
Yes, you can disable the alarm temporarily without unlocking.
Just press the mute button on your lock’s remote or app—silence kicks in for a few minutes.
That way, you’re not disturbed during quick stops, but full security stays active until you open it properly.
Conclusion
You proudly bolt your bike down with a screaming alarm, like wrapping a diamond in Christmas lights.
Thieves glance over—sure, the 130dB wail could wake the dead, but your chain?
It looks like spaghetti in a storm.
You think tech saves you, but all you’ve done is announce: “Steal me quietly!” Irony?
You’re not securing your ride—you’re starring in a heist soundtrack.
