12 Best Bike Locks With Alarms for 2026 (Loud & Secure Choices)
You want loud and tough—these 2026 bike locks deliver up to 130dB alarms, so thieves won’t stick around. With remote controls, weatherproof builds, and hardened steel chains or U-locks, your bike stays protected in any condition.
Many feature USB-C charging, low-battery alerts, and smart sensors that trigger screaming alarms on tampering. Brands like Mengshen, BANGTING, and YOHOOLYO lead with secure, durable designs.
You’re already thinking ahead—smart choices await.
Quick Overview
- Many top bike locks feature 110–130 dB alarms that trigger on vibration or motion to deter theft effectively.
- High-resilience models use 16 mm hardened steel or 8 mm manganese chains for superior cut resistance.
- IP55 to IP65 ratings ensure reliable weatherproof and water-resistant performance in harsh conditions.
- Remote controls with ranges up to 66 feet allow convenient locking, unlocking, and bike location via signal.
- Power options include long-lasting AAA batteries with low-battery alerts and USB-C rechargeable designs.
| Mengshen Bike Lock with Remote & Alarm |  | Best Remote Lock | Alarm Volume: 115dB | Locking Method: Remote, 4-digit password | Power Source: 3 AAA batteries | VIEW LATEST PRICE | Read Our Analysis |
| Mengshen Bike Alarm Lock with Remote |  | Top Wireless Pick | Alarm Volume: 115dB | Locking Method: Remote, 4-digit password | Power Source: 3 AAA batteries | VIEW LATEST PRICE | Read Our Analysis |
| BANGTING 4Ft Bike Chain Lock with Alarm |  | Heavy-Duty Chain | Alarm Volume: 110dB | Locking Method: Keys, remote | Power Source: USB-C rechargeable (implied via cable) | VIEW LATEST PRICE | Read Our Analysis |
| YOHOOLYO Motorcycle Disc Brake Alarm Lock |  | Best Disc Lock | Alarm Volume: 110dB | Locking Method: Keys, alarm with motion sensor | Power Source: Internal batteries (6 + 6 backup) | VIEW LATEST PRICE | Read Our Analysis |
| Heavy Duty Anti-Theft U Lock for E-Bikes |  | Strongest U-Lock | Alarm Volume: High-pitched (no specific dB) | Locking Method: Keys | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| Heavy Duty Bike U-Lock with Alarm |  | Best for E-Bikes | Alarm Volume: High-pitched (no specific dB) | Locking Method: Keys | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| BANGTING 4FT Smart Bike Lock (Black) | | Smart Alarm Choice | Alarm Volume: 110dB | Locking Method: Keys, remote (alarm) | Power Source: USB-C rechargeable | VIEW LATEST PRICE | Read Our Analysis |
| Electric Scooter Lock with Alarm & Bag |  | All-in-One Kit | Alarm Volume: Adjustable (7 levels, no base dB) | Locking Method: Keys, remote (alarm) | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| Wsdcam 113dB Bike Alarm with Remote |  | Most Sensitive | Alarm Volume: 113dB | Locking Method: Remote (wireless alarm only) | Power Source: Battery saving technology (type not specified) | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 110dB Alarm |  | Rechargeable Option | Alarm Volume: 110dB | Locking Method: Keys, remote | Power Source: Lithium polymer (USB-C rechargeable) | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 110dB Alarm |  | Long Battery Life | Alarm Volume: 110dB | Locking Method: Keys | Power Source: Batteries included (type not specified, long life) | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 130dB Alarm |  | Loudest Alarm | Alarm Volume: 130dB | Locking Method: Keys, chain | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Mengshen Bike Lock with Remote & Alarm
Need a secure, key-free bike lock that deters thieves with a piercing 115dB alarm? You’ve got it with the Mengshen Bike Lock.
Unlock via remote—up to 40 meters away—or a 4-digit password, with 256 combo options. No keys mean no fumbling or losing access.
The alarm blasts if someone bumps, cuts, or tampers with it, scaring off would-be thieves. It’s tough, too: IP55 waterproof, rust-resistant, and built to handle -10°C to 60°C.
Runs on 3 AAA batteries, with clear low-battery alerts. Swap them easily when needed.
Use it not just on bikes, but scooters, gates, strollers—pretty much anything valuable. Secure, simple, and smart.- Alarm Volume:115dB
- Locking Method:Remote, 4-digit password
- Power Source:3 AAA batteries
- Weather Resistance:IP55 waterproof
- Alarm Trigger:Movement, vibration, cutting, disassembly
- Use Cases:Bicycle, motorcycle, scooter, stroller, gate, tools
- Additional Feature:4-digit password access
- Additional Feature:256 password combinations
- Additional Feature:LED low battery indicator
Mengshen Bike Alarm Lock with Remote
Who says you have to choose between convenience and security? With the Mengshen Bike Alarm Lock with Remote, you get both.
You can lock and unlock it using the remote or a 4-digit password—no keys needed. The remote works up to 40 meters, and you’ll hear a “Du” sound when engaging or disarming.
It triggers a loud 115 dB alarm if someone tampers with it. Rain or shine, it holds up with IP55 waterproofing and works from -10°C to +60°C.
Its 31-inch cable secures bikes, scooters, gates, and more. Running low?
The LED flashes to warn you. Just replace the AAA batteries and keep protecting what’s yours.- Alarm Volume:115dB
- Locking Method:Remote, 4-digit password
- Power Source:3 AAA batteries
- Weather Resistance:IP55 waterproof
- Alarm Trigger:Movement, vibration, cutting, disassembly
- Use Cases:Bicycle, motorcycle, scooter, stroller, gate, tools
- Additional Feature:40-meter remote range
- Additional Feature:Audible “Du” sound cue
- Additional Feature:Dual lock/unlock methods
BANGTING 4Ft Bike Chain Lock with Alarm
The BANGTING 4Ft Bike Chain Lock with Alarm is your best bet if you want loud, reliable theft deterrence with serious cutting resistance. You’ll get a 110dB alarm that triggers instantly under tampering, plus a rugged 8mm manganese steel chain that withstands cutting and sawing.
The zinc alloy lock core and dustproof cap boost security and weather resistance, while the IP65-rated wireless alarm handles rain and washing without fail. Its 4-foot length lets you secure two bikes or anchor gear like ladders and toolboxes.
You also get scratch protection from the polypropylene cover and convenient USB-C charging. With three keys, two remotes, and a storage bag, it’s built for real-world use—durable, flexible, and ready.- Alarm Volume:110dB
- Locking Method:Keys, remote
- Power Source:USB-C rechargeable (implied via cable)
- Weather Resistance:IP65 waterproof
- Alarm Trigger:Impact, attempted theft
- Use Cases:Bicycle, e-bike, ladder, mower, gate, fence
- Additional Feature:8mm manganese steel chain
- Additional Feature:USB-C rechargeable battery
- Additional Feature:Includes silicone protective cover
YOHOOLYO Motorcycle Disc Brake Alarm Lock
Looking for a rugged, reliable alarm lock that stands up to theft and the elements? The YOHOOLYO Motorcycle Disc Brake Alarm Lock’s got you covered.
It delivers a loud 110 dB alarm with motion detection and a 5-second delay to prevent false triggers. Its 7 mm adjustable locking pin fits any angle, while the durable metal build resists rust, water, and physical attacks.
You’ll appreciate the double security with two keys, an Allen wrench, and both internal and backup batteries. It’s waterproof, crash-resistant, and comes with a carry pouch.
Perfect for motorcycles, scooters, or bikes—this lock secures your ride in any condition without skipping a beat.- Alarm Volume:110dB
- Locking Method:Keys, alarm with motion sensor
- Power Source:Internal batteries (6 + 6 backup)
- Weather Resistance:Weather-resistant, waterproof
- Alarm Trigger:Motion sensor (5-second delay)
- Use Cases:Motorcycle, bicycle, scooter, dirt bike, wheel-spoked vehicles
- Additional Feature:360-degree adjustable locking pin
- Additional Feature:6 backup batteries included
- Additional Feature:Allen wrench for disassembly
Heavy Duty Anti-Theft U Lock for E-Bikes
Need serious security for your e-bike without sacrificing convenience? This heavy-duty U lock’s got your back.
Built with 16mm hardened stainless steel, it resists bolt cutters, leverage attacks, and hand tools like a pro. The motion-activated, high-pitched alarm deters thieves before they make a move.
It’s weatherproof, so rain or shine, you’re covered. Fits wheels up to 20×4—perfect for e-bikes, scooters, or motorcycles.
You get three keys, ideal for backup access. Park confidently in public spots knowing your ride’s locked down tight and within earshot if trouble strikes.
Tough, loud, and reliable—it’s peace of mind you can count on.- Alarm Volume:High-pitched (no specific dB)
- Locking Method:Keys
- Power Source:Not specified
- Weather Resistance:Weatherproof
- Alarm Trigger:Motion-activated
- Use Cases:E-bike, scooter, motorcycle
- Additional Feature:16mm stainless steel shackle
- Additional Feature:3 sets of included keys
- Additional Feature:Fits 20×4 wide tires
Heavy Duty Bike U-Lock with Alarm
Who says a U-lock can’t fight back? This heavy-duty bike U-lock with alarm does—loudly.
When motion triggers its high-pitched alarm, thieves won’t stick around long. Built with 16mm hardened steel, it resists bolt cutters and leverage attacks, while the weatherproof design keeps it strong in any condition.
The 5″ x 6″ opening fits fat tires up to 20” x 4”, even on e-bikes, scooters, or motorcycles. You’ll get three keys and flexible locking options, so securing your ride’s easy.
Best of all, you’ll feel safer knowing the alarm has your back when your bike’s out of sight but still within earshot.- Alarm Volume:High-pitched (no specific dB)
- Locking Method:Keys
- Power Source:Not specified
- Weather Resistance:Weather Proof
- Alarm Trigger:Motion-activated
- Use Cases:E-bike, scooter, motorcycle
- Additional Feature:5 x 6 inch opening
- Additional Feature:Fat tire compatible design
- Additional Feature:3 master keys provided
BANGTING 4FT Smart Bike Lock (Black)
What if your bike lock could shout for help the moment trouble starts? The BANGTING 4FT Smart Bike Lock does exactly that with its 110dB alarm, triggered by impact or tampering.
You’ll arm and disarm it easily with the remote while the physical key ensures access even if the battery dies. Its 8mm manganese steel chain resists cutting, and the reinforced zinc alloy lock head fights drilling.
With IP65 weather protection and a scratch-free sleeve, it guards your bike, e-bike, scooter, or gate in any condition. You get two remotes, three keys, a storage bag, and a USB-C cable—everything you need to lock up fast and ride worry-free.- Alarm Volume:110dB
- Locking Method:Keys, remote (alarm)
- Power Source:USB-C rechargeable
- Weather Resistance:IP65 waterproof
- Alarm Trigger:Impact, attempted theft
- Use Cases:Bicycle, e-bike, scooter, motorcycle, gate, fence
- Additional Feature:Reinforced zinc alloy body
- Additional Feature:Scratch-free chain sleeve
- Additional Feature:Dual remotes included
Electric Scooter Lock with Alarm & Bag
Looking for a lock that keeps your e-scooter safe while offering smart, on-the-go convenience? This Electric Scooter Lock with Alarm & Bag has you covered.
It packs a motion-sensitive alarm with 7 volume levels, so you can customize how loud it gets when someone tampers with your ride. You’ll love the remote control—you can arm or disarm it fast without fumbling for keys.
The heavy-duty alloy steel chain resists cuts and harsh weather, while the 94 cm length secures scooters, bikes, or more. Plus, the included waterproof silicone bag shields the lock and stores keys or your phone safely.
It’s tough, smart, and ready to roll.- Alarm Volume:Adjustable (7 levels, no base dB)
- Locking Method:Keys, remote (alarm)
- Power Source:Not specified
- Weather Resistance:Waterproof (bag and lock)
- Alarm Trigger:Motion-sensitive
- Use Cases:E-scooter, bike, motorcycle, stroller
- Additional Feature:7 adjustable alarm volumes
- Additional Feature:Waterproof silicone storage bag
- Additional Feature:Inner mesh organizer pocket
Wsdcam 113dB Bike Alarm with Remote
Need serious protection without the hassle of cables or keys? The Wsdcam 113dB Bike Alarm’s got your back.
It mounts wirelessly and arms with a remote, triggering a deafening 113dB alarm when vibration is detected. You can adjust sensitivity across 7 levels and pick one of 3 volume settings to fit your environment.
Its IP55-rated body shrugs off rain and dust, while battery-saving tech keeps it running longer. The remote works up to 66 ft away and helps locate your bike with a 3-bell search.
It’s tough, smart, and built to exceed industry standards—perfect for bikes, e-bikes, scooters, or motorcycles.- Alarm Volume:113dB
- Locking Method:Remote (wireless alarm only)
- Power Source:Battery saving technology (type not specified)
- Weather Resistance:IP55 waterproof
- Alarm Trigger:Vibration, adjustable sensitivity
- Use Cases:Bike, e-bike, motorcycle, scooter
- Additional Feature:7 sensitivity levels
- Additional Feature:3 volume settings
- Additional Feature:Vehicle search function
Bike Chain Lock with 110dB Alarm
Who says you can’t have both toughness and smart features in one compact package? You get exactly that with the eMjollRay Bike Chain Lock with 110dB alarm.
It’s built tough with alloy steel and a reinforced fabric sleeve, plus a silicone-covered alarm to shrug off impacts. The motion-triggered 110dB alarm has three volume levels and two sensitivity settings, giving you control over security.
Remote locking and unlocking from a distance make it convenient, and the USB-C rechargeable battery lasts up to 60 days on standby. It’s waterproof, durable, and comes with two remotes, three keys, and a storage bag.- Alarm Volume:110dB
- Locking Method:Keys, remote
- Power Source:Lithium polymer (USB-C rechargeable)
- Weather Resistance:Waterproof
- Alarm Trigger:Motion-triggered
- Use Cases:Bike, e-scooter, motorcycle, gate
- Additional Feature:60-day standby battery life
- Additional Feature:Rechargeable lithium polymer battery
- Additional Feature:Model TS-BJQ03 identifier
Bike Chain Lock with 110dB Alarm
Why settle for less when your e-bike, scooter, or motorcycle demands top-tier protection? You get serious security with the 6 mm thick steel chain and zinc alloy lock—resistant to cutting, sawing, and picking.
The 110dB alarm activates on motion, scaring off thieves instantly. Need flexibility?
Its 1.5 m length secures multiple bikes or wraps racks easily. You’ll appreciate the nylon-covered chain that resists scratches and corrosion.
With three keys, backup batteries, and a low-battery alert beep, you’re always ready. It’s lightweight, portable, and durable for daily use.
Just replace the battery carefully when it chirps. Backed by a 90-day warranty, it’s a solid, reliable choice you can trust.- Alarm Volume:110dB
- Locking Method:Keys
- Power Source:Batteries included (type not specified, long life)
- Weather Resistance:Dust-protected, rust-resistant
- Alarm Trigger:Motion detector
- Use Cases:Bicycle, motorcycle, scooter, e-scooter, door, gate
- Additional Feature:1.5-meter extended chain
- Additional Feature:Multi-disk locking cylinder
- Additional Feature:90-day product warranty
Bike Chain Lock with 130dB Alarm
Want maximum theft deterrence with a loud, reliable alarm? This 130dB bike chain lock’s vibration sensor triggers a piercing alarm when tampered with, scaring off thieves.
You can switch between alarm and silent mode anytime. The 8mm heat-hardened steel chain resists cutting and rust, while the 0.47-inch solid steel padlock adds brute strength.
Weighing 519g, it’s heavy duty but manageable. With an IP66 rating, it handles rain without fail.
Lock it through your frame or wheel hub for best results. Use the included three unique keys—no tinfoil or hooks can beat its patent-protected cylinder.
Secure your bike, e-bike, or scooter with confidence.- Alarm Volume:130dB
- Locking Method:Keys, chain
- Power Source:Not specified
- Weather Resistance:IP66 waterproof
- Alarm Trigger:Vibration sensor
- Use Cases:Bike, e-bike, motorcycle, scooter
- Additional Feature:130dB maximum alarm volume
- Additional Feature:Patent-protected lock cylinder
- Additional Feature:8mm heat-hardened steel chain
Factors to Consider When Choosing With Alarms Bike Locks With Alarms
You’ll want to ensure the alarm volume since louder alerts—like 120dB or higher—make theft attempts harder to ignore. Check the weather resistance rating and power source type so your lock stays reliable in rain or on long rides without frequent recharging.
Also, pay attention to the locking mechanism, build quality, and overall durability to consider it stands up to real-world use.
Alarm Volume Level
How loud should your bike lock’s alarm be to stop a thief in their tracks? Aim for at least 110 dB—it’s loud enough to draw attention in busy urban areas and acts as a strong deterrent.
If you want maximum impact, go for models hitting 130 dB; that piercing blast can scare off thieves from farther away. Most alarms range between 110 and 130 dB, so check specs closely.
Don’t overlook whether the volume is fixed or adjustable. Some locks let you fine-tune the sound level, which helps reduce false alarms in noise-sensitive spots.
Adjustable settings mean you can keep the peace at home but still pack a punch downtown. A louder alarm boosts security, but flexibility makes it practical.
Match the volume to your environment, and you’ll get both deterrence and convenience.
Weather Resistance Rating
What good is a loud alarm if your lock fails in the rain? Don’t overlook weather resistance—check the IP rating.
An IP55 rating means protection from rain and dust, while IP66 or IP65 handles heavy sprays and harsh conditions. Make sure the lock’s body uses corrosion-resistant materials like hardened steel or zinc alloy to fight rust.
Sealed electronics are key; they keep the alarm working in wet weather and extreme temps from -10°C to 60°C. Look for covered joints, sleeves, or protective casings that block water from entering moving parts.
Confirm the lock is labeled weatherproof or waterproof for real outdoor use, but avoid submerging it unless rated for that. Even high-pressure rinses or car washes can damage units not built for them.
A durable alarm lock should shrug off storms, humidity, and daily exposure—because reliability matters as much as volume.
Power Source Type
Just as weather resistance guarantees your alarm works in harsh conditions, the power source determines how reliably it stays active over time. Most bike lock alarms run on 3 AAA batteries and include low-battery warnings like LED flashes or beeps.
Some use built-in rechargeable lithium polymer batteries charged via USB-C, offering longer-term convenience. Battery life ranges from weeks to 60 days, depending on usage, with motion or vibration sensors drawing more power due to constant monitoring.
High-decibel 110dB–130dB sirens also affect drain, especially during frequent triggers. If your remote control’s LED is dim or range drops, its separate battery likely needs replacing.
Rechargeable models reduce waste and downtime but require charging access. With AAA-powered locks, keep spares on hand.
Choosing the right power type comes down to your riding frequency and whether you prefer replaceable batteries or the simplicity of USB charging.
Locking Mechanism Options
Why rely on keys when you can arm and disarm your bike lock with a click or a code? You’ve got two main options: remote control or a 4-digit PIN—both keep keys out of the equation.
Remote ranges hit up to 40 meters, so you can lock or unlock from down the block. Your alarm triggers at movement, vibration, or tampering, blasting 110–130 dB to scare off thieves.
Most models combine that alarm with a physical chain, U-lock, or disc lock, giving you both audible and mechanical protection. Just don’t forget to check how the power setup affects the locking function—some remotes or keypads drain faster than others.
Choose a system that balances convenience and responsiveness, ensuring fast activation and reliable disarming. This combo gives you peace of mind without slowing you down.
Durability and Build Quality
How tough is your lock when it faces bolt cutters or a sustained attack? You need hardened steel or manganese steel construction to resist cutting, sawing, and picking.
Go for a U-lock or chain with at least 8 mm thickness—16 mm is better for high-risk areas. A strong lock core and reinforced housing protect against brute force.
Look for a scratch-resistant finish and protective sleeves that hold up to daily wear. Don’t forget weather resistance: aim for IP65 or IP66 ratings so rain, dust, and UV exposure won’t degrade performance.
A loud 110–130 dB alarm with a sensitive trigger helps scare off thieves, but only if the build supports it. Flimsy plastic housings fail fast—choose full-metal or high-impact composite bodies.
Your lock must survive constant outdoor use without corroding or weakening. Build quality isn’t just about strength—it’s long-term reliability where it counts.
Frequently Asked Questions
Can Bike Alarm Locks Work in Extreme Weather?
Yes, they work in extreme weather. You’ll find most alarm locks are built to handle freezing cold, blazing heat, and heavy rain—all while staying loud and reliable when you need them most.
Do Alarm Locks Require Regular Software Updates?
You don’t need regular software updates—87% of alarm locks use standalone hardware. You just install and go.
No apps or patches. They’re built to work right out the box and stay reliable, even when tech around them changes.
You’re set for years.
Are Smart Bike Locks Vulnerable to Hacking?
Yes, you’re exposed to hacking if the lock lacks strong encryption. Manufacturers push updates to patch flaws, so you’ll need to install them.
Don’t skip firmware alerts—your lock’s security depends on staying current and using trusted brands with proven cybersecurity measures.
How Do I Dispose of a Damaged Alarm Lock?
You should recycle the metal parts at a scrap facility and take the battery to an e-waste drop-off. You can’t toss it in regular trash since it’s got electronics and potentially hazardous materials.
Check local rules to be safe.
Can I Use One Alarm Lock for Multiple Bikes?
One lock’s like a single guard—it can’t watch multiple bikes at once. You’d need extra protection, so grab another alarm lock; two locks mean double the safety and peace of mind when you’re out riding.
Conclusion
You’ve seen the best—now secure your ride smart. When it comes to thieves, better safe than sorry.
Lock it loud, lock it tough, and let that 130dB alarm shout louder than regret. A good alarm lock don’t just guard your bike; it guards your peace.
So don’t cut corners—your freedom on two wheels? Worth every click, every chain link, every blaring second.
Keep it safe. Keep it yours.
