12 Best Waterproof Bike Locks With Alarms for 2026 (Theft-Proof Your Ride)
You’re securing your ride with 2026’s toughest waterproof alarm locks, built to blast 110–130dB sirens when tampered with. With IP55 to IP65 ratings, remote access up to 66 feet, and rugged steel construction, these locks withstand rain and theft attempts.
You’ll find options with rechargeable power, adjustable sensitivity, and secure chaining for bikes or scooters. Strong, smart, and ready for anything—your next level of protection starts here.
Quick Overview
- Waterproof bike locks with IP55 or higher ratings protect against rain and humidity for reliable outdoor use.
- Alarms ranging from 110 dB to 130 dB deter thieves by producing loud, attention-grabbing sounds on tampering.
- Many models offer remote control access up to 66 feet for convenient arming and disarming.
- Dual locking mechanisms, like disc locks with cables or chains, enhance security across bikes and scooters.
- Rechargeable or long-lasting battery designs with low-power modes extend alarm functionality and usability.
| Mengshen Bike Lock with Remote & Alarm |  | Best Overall | Alarm Volume (dB): 115dB | Waterproof Rating: IP55 | Power Source: 3 AAA batteries | VIEW LATEST PRICE | Read Our Analysis |
| Electric Scooter Lock with Alarm & Bag |  | Best Value | Alarm Volume (dB): Not specified (motion-sensitive alarm) | Waterproof Rating: Waterproof construction (bag), not rated | Power Source: Internal batteries (not specified) | VIEW LATEST PRICE | Read Our Analysis |
| Alarm Disc Lock Set with Brake Lock and Cable |  | Budget-Friendly Pick | Alarm Volume (dB): 110dB | Waterproof Rating: Waterproof, rust-proof | Power Source: 6 internal + 6 backup batteries | VIEW LATEST PRICE | Read Our Analysis |
| Wsdcam 113dB Bike Alarm Waterproof |  | Editor’s Choice | Alarm Volume (dB): 113dB | Waterproof Rating: IP55 | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| Mengshen Bike Alarm Lock with Remote |  | Most Popular | Alarm Volume (dB): 115dB | Waterproof Rating: IP55 | Power Source: 3 AAA batteries | VIEW LATEST PRICE | Read Our Analysis |
| YOHOOLYO Motorcycle Disc Brake Alarm Lock |  | Best for Motorcycles | Alarm Volume (dB): 110dB | Waterproof Rating: Waterproof | Power Source: 6 internal + 6 backup batteries | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 110dB Alarm |  | Best Heavy-Duty | Alarm Volume (dB): 110dB | Waterproof Rating: IP65 | Power Source: Rechargeable (USB-C) | VIEW LATEST PRICE | Read Our Analysis |
| WSDCAM Bike Alarm with Remote (2-Pack) |  | Best 2-Pack | Alarm Volume (dB): 113dB | Waterproof Rating: IP55 | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| BANGTING 4Ft Bike Chain Lock with Alarm |  | Most Durable | Alarm Volume (dB): 110dB | Waterproof Rating: IP65 | Power Source: Rechargeable (USB-C) | VIEW LATEST PRICE | Read Our Analysis |
| Electric Scooter Lock with Alarm & Bag |  | Best for E-Scooters | Alarm Volume (dB): Not specified (motion-sensitive alarm) | Waterproof Rating: Waterproof construction (bag), not rated | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| Heavy Duty Anti-Theft U Lock 16mm |  | Best U-Lock | Alarm Volume (dB): High-pitched (not specified) | Waterproof Rating: Weatherproof | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with 130dB Alarm |  | Loudest Alarm | Alarm Volume (dB): 130dB | Waterproof Rating: IP66 | Power Source: Not specified | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Mengshen Bike Lock with Remote & Alarm
Looking for a secure, key-free way to protect your bike or other gear? You’ve got two easy options with the Mengshen Bike Lock: use the remote or enter your 4-digit password—no keys needed.
The remote works up to 40 meters away, and with 256 password combos, it’s tough to crack. If someone tries to cut, shake, or tamper with the lock, the 115dB alarm blares, scaring off thieves.
It’s built tough, with IP55 waterproofing and rust resistance, working in temps from -10°C to 60°C. Powered by 3 AAA batteries, it’ll warn you when power’s low.
You can use it on bikes, scooters, gates, strollers—you name it.- Alarm Volume (dB):115dB
- Waterproof Rating:IP55
- Power Source:3 AAA batteries
- Remote Control:Yes
- Lock Type:Cable lock with remote/password
- Battery Indicator:LED flash + audible cue
- Additional Feature:4-digit password option
- Additional Feature:Up to 40m remote range
- Additional Feature:Protects strollers, gates, tools
Electric Scooter Lock with Alarm & Bag
Need maximum security for your electric scooter without sacrificing convenience? This electric scooter lock’s motion-sensitive alarm deters thieves with seven adjustable volume levels, so you’re alerted the second it’s tampered with.
You can arm and disarm it quickly using the remote, while the heavy-duty alloy steel chain resists cutting and harsh weather. The 94 cm thick chain wraps around wheels and posts easily.
It comes with three keys and a rugged waterproof silicone bag that stores the lock and extras like your phone or keys in the mesh pocket. It won’t scratch your gear, and it keeps everything dry on the go.- Alarm Volume (dB):Not specified (motion-sensitive alarm)
- Waterproof Rating:Waterproof construction (bag), not rated
- Power Source:Internal batteries (not specified)
- Remote Control:Yes
- Lock Type:Chain lock
- Battery Indicator:Not specified
- Additional Feature:Includes waterproof silicone bag
- Additional Feature:7 adjustable alarm volumes
- Additional Feature:Heavy-duty alloy steel chain
Alarm Disc Lock Set with Brake Lock and Cable
Want serious security for your ride, rain or shine? Grab the Alarm Disc Lock Set—it’s built to guard your bike, scooter, or motorcycle in any weather.
You get a 110 dB alarm that screams when someone shakes your ride. Just press once to arm.
The 7mm forged steel pin locks your disc brake, stopping thieves fast. It’s waterproof, rust-proof, and tough as hell.
The kit includes a 5ft cable, reminder strap, carry pouch, Allen wrench, keys, and 12 batteries total. You’re covered day or night, wet or dry.
This lock doesn’t quit. You’ll sleep easier knowing your ride’s locked down hard.- Alarm Volume (dB):110dB
- Waterproof Rating:Waterproof, rust-proof
- Power Source:6 internal + 6 backup batteries
- Remote Control:No
- Lock Type:Disc lock
- Battery Indicator:Not specified
- Additional Feature:7mm forged steel pin
- Additional Feature:Includes reminder cable
- Additional Feature:One-press alarm activation
Wsdcam 113dB Bike Alarm Waterproof
The Wsdcam 113dB Bike Alarm Waterproof is your best bet if you’re riding an electric bike or scooter and need reliable, weather-resistant theft protection. You’ll appreciate its 7-level sensitivity and 3-volume settings, letting you customize alerts to your environment.
It uses mature sensor tech that reliably detects vibration, so false alarms are rare. With IP55 waterproofing, it withstands rain and splashes without fail.
You can control it wirelessly up to 66 feet away, and the battery-saving design keeps it running longer. Use the vehicle search function to locate your ride quickly in crowded spots.
It’s tough, smart, and exceeds industry standards—your ride stays safe, rain or shine.- Alarm Volume (dB):113dB
- Waterproof Rating:IP55
- Power Source:Not specified
- Remote Control:Yes
- Lock Type:Wireless alarm (no physical lock)
- Battery Indicator:Not specified
- Additional Feature:7 sensitivity levels
- Additional Feature:Vehicle search function
- Additional Feature:Battery saving technology
Mengshen Bike Alarm Lock with Remote
Looking for a smart, keyless way to secure more than just your bike? The Mengshen Bike Alarm Lock with Remote’s got you covered.
Lock and unlock it with a 4-digit password or remote—no keys needed. The remote works up to 40 meters, and the 115 dB alarm triggers on vibration, movement, or tampering.
It’s IP55 waterproof, handles extreme temps (-10°C to 60°C), and the 31-inch cable fits bikes, scooters, gates, and more. Powered by 3 AAA batteries, it alerts you with a flashing LED and a “Du” sound on lock/unlock.
Replace the remote’s battery if the range drops or LED dims.- Alarm Volume (dB):115dB
- Waterproof Rating:IP55
- Power Source:3 AAA batteries
- Remote Control:Yes
- Lock Type:Cable lock
- Battery Indicator:LED flash + audible cue
- Additional Feature:256 password combinations
- Additional Feature:31-inch cable length
- Additional Feature:No keys required
YOHOOLYO Motorcycle Disc Brake Alarm Lock
Need serious security for your motorcycle, scooter, or dirt bike? The YOHOOLYO Motorcycle Disc Brake Alarm Lock’s got your back.
With a piercing 110 dB alarm and motion sensor that triggers after a 5-second delay, it scares off thieves instantly. You’ll love its 7 mm adjustable locking pin that rotates 360 degrees and stays fixed in place.
Built tough with rust-resistant, waterproof metal, it withstands crashes and harsh weather. It runs on 6 internal batteries, plus 6 backups, so it never quits.
You get 2 keys, an Allen wrench, and a carry pouch—all neatly packed. It’s ready to guard your ride day or night.- Alarm Volume (dB):110dB
- Waterproof Rating:Waterproof
- Power Source:6 internal + 6 backup batteries
- Remote Control:Yes
- Lock Type:Disc lock
- Battery Indicator:Not specified
- Additional Feature:360-degree adjustable pin
- Additional Feature:5-second motion delay
- Additional Feature:Includes carry pouch
Bike Chain Lock with 110dB Alarm
Want serious protection for your bike, e-bike, or even scooter without sacrificing convenience? This 4ft, 8mm heavy-duty chain lock packs a 110dB alarm that screams when tampered with—first a warning, then a full 20-second blast if moved again.
You get two sensitivity and three volume settings, so it’s smart, not annoying. The rechargeable, IP65-rated alarm resists water and pry attacks thanks to a rugged metal shell and glue-filled core.
Wrapped in scratch-resistant canvas, it won’t damage your ride. Use it on bikes, scooters, gates, or tools.
Includes remotes, keys, USB-C cable, and storage bag. It’s tough, versatile, and ready to guard your gear.- Alarm Volume (dB):110dB
- Waterproof Rating:IP65
- Power Source:Rechargeable (USB-C)
- Remote Control:Yes (2 remotes)
- Lock Type:Chain lock
- Battery Indicator:Not specified
- Additional Feature:Rechargeable via USB-C
- Additional Feature:2 sensitivity levels
- Additional Feature:Glue-filled rigid interior
WSDCAM Bike Alarm with Remote (2-Pack)
If you’re after a versatile, high-decibel alarm that secures more than just your bike, the WSDCAM Bike Alarm with Remote (2-Pack) stands out as one of the most adaptable choices in the 2026 lineup. You’ll get two 113dB alarms with 7 sensitivity levels and 3 volume settings—perfect for bikes, scooters, or even luggage.
The IP55 rating keeps them weather-resistant outdoors. Use the remote up to 66 feet away to arm, disarm, or trigger a vehicle search.
With double-sided tape or straps, setup takes minutes. You can pick from three alert tones and cover multiple items at once.
It’s your go-to for broad, no-fuss protection on the move.- Alarm Volume (dB):113dB
- Waterproof Rating:IP55
- Power Source:Not specified
- Remote Control:Yes (2-pack)
- Lock Type:Wireless alarm (no physical lock)
- Battery Indicator:Not specified
- Additional Feature:Double-sided tape install
- Additional Feature:Pack of 2 alarms
- Additional Feature:Three bell options
BANGTING 4Ft Bike Chain Lock with Alarm
Who wouldn’t want a bike lock that stands up to cutting, sawing, and the elements while shouting 110dB of alarm noise at would-be thieves? You get exactly that with the BANGTING 4ft Bike Chain Lock.
Its 8mm manganese steel resists attacks, while the zinc alloy core adds strength. The IP65-rated wireless alarm handles rain and dust, and the scratch-resistant polypropylene cover shields against rust and UV damage.
At 4ft, you can secure two bikes or anchor gear like ladders and toolboxes. It includes three keys, two remotes, and a USB-C cable for easy charging—everything you need stays protected in the included storage bag.- Alarm Volume (dB):110dB
- Waterproof Rating:IP65
- Power Source:Rechargeable (USB-C)
- Remote Control:Yes (2 remotes)
- Lock Type:Chain lock
- Battery Indicator:Not specified
- Additional Feature:USB-C charging cable
- Additional Feature:Dustproof cap on lock
- Additional Feature:Polypropylene scratch-resistant cover
Electric Scooter Lock with Alarm & Bag
Looking for a versatile, all-in-one solution to secure your electric scooter, bike, or even stroller in any weather? You’ve got it with this electric scooter lock with alarm & bag.
The 37-inch heavy-duty alloy steel chain resists cutting and sawing, while the motion-sensitive alarm blasts up to 7 volume levels when triggered. Arm or disarm it quickly with the remote for instant access.
Rain or shine, the waterproof silicone bag keeps your lock dry and has a mesh pocket for keys or phone. It’s tough, weather-resistant, and includes 3 keys, remote, and bag.
You’re covered whether on a bike, e-scooter, or stroller—no compromises.- Alarm Volume (dB):Not specified (motion-sensitive alarm)
- Waterproof Rating:Waterproof construction (bag), not rated
- Power Source:Not specified
- Remote Control:Yes
- Lock Type:Chain lock
- Battery Indicator:Not specified
- Additional Feature:Inner mesh pocket bag
- Additional Feature:94cm versatile chain
- Additional Feature:Key-operated reliable performance
Heavy Duty Anti-Theft U Lock 16mm
Need serious protection for your e-bike, scooter, or motorcycle? Grab the Heavy Duty Anti-Theft U Lock 16mm.
Its 16mm hardened stainless steel resists bolt cutters, leverage attacks, and hand tools. The motion-activated, high-pitched alarm scares off thieves before they strike.
It’s weatherproof, so rain or shine, it won’t quit on you. Fits wide 20×4 wheels—perfect for e-bikes and scooters.
You get three keys for backup and easy sharing. Park confidently in public spots knowing your ride’s secured.
When your prized ride’s out of sight but within earshot, this U lock delivers real peace of mind. Tough, loud, and reliable—ideal for heavy-duty security.- Alarm Volume (dB):High-pitched (not specified)
- Waterproof Rating:Weatherproof
- Power Source:Not specified
- Remote Control:No
- Lock Type:U-lock
- Battery Indicator:Not specified
- Additional Feature:16mm stainless steel shackle
- Additional Feature:Resists bolt cutters
- Additional Feature:Fits wide 20×4 tires
Bike Chain Lock with 130dB Alarm
Want serious protection for your bike, e-bike, or scooter in all weather? This bike chain lock’s 130dB alarm screams when vibrations detect movement, scaring off thieves.
You can switch between alarm and silent modes, but for maximum effect, attach the padlock to your frame or wheel hub. Built tough, it features an 8mm heat-hardened steel chain and a thick 0.47-inch solid steel padlock—both rust-resistant with an IP66 waterproof rating.
The patented cylinder blocks tampering from tinfoil or hooks. Three unique keys come included, so no one else with the same lock can open yours.
It’s reliable, loud, and built for outdoor use.- Alarm Volume (dB):130dB
- Waterproof Rating:IP66
- Power Source:Not specified
- Remote Control:No
- Lock Type:Padlock + chain
- Battery Indicator:Not specified
- Additional Feature:130dB ultra-loud alarm
- Additional Feature:Patent anti-tamper cylinder
- Additional Feature:0.47” thick padlock hook
Factors to Consider When Choosing Waterproof Bike Locks With Alarms
You’ll want a lock with a loud alarm—ideally 120dB or more—so it grabs attention fast if someone messes with your bike. Check the weather resistance rating and power source so your lock stays reliable in rain or cold, and make sure the battery lasts or recharges easily.
Also, pick a locking mechanism and remote range that fit how and where you park your bike daily.
Alarm Volume and Reach
How loud does a bike lock alarm need to be to stop a thief in their tracks? A good alarm should hit at least 110 dB, but models reaching 130 dB are far more effective—especially in noisy or crowded areas.
You want a sound so sharp and piercing it draws attention fast. Many locks let you adjust volume and sensitivity, often with 7 levels each, so you can reduce false alarms without sacrificing security.
High volume drains battery faster, so balance power with longevity. Some locks also trigger remotely when movement is detected within 40 to 66 feet, giving you real-time alerts even when you’re nearby but not right beside your bike.
That range lets you react quickly if someone tampers with your ride. Loudness and reach work together to scare off thieves and draw bystanders’ eyes—your best defense before theft happens.
Weather Resistance Rating
A loud alarm won’t help if the lock fails in the rain. You need solid weather resistance to keep your lock functioning in wet conditions.
Look for an IP rating—IP55 offers protection from water jets and some dust, ideal for light rain. If you ride in heavy storms or near spray, go for IP66; it handles powerful jets and blocks more dust.
Some locks come with silicone seals or protective covers that shield internals from moisture and dirt. Don’t overlook materials: choose rust-proof steel or corrosion-resistant components to survive long-term exposure.
A high IP rating means nothing if the metal snaps or the mechanism seizes. Always check both sealing and build quality.
You’re trusting this device outside every day—make sure it can endure downpours, humidity, and grime without failing when you need it most.
Power Source and Life
Why does your bike lock die when you need it most? Because you’re using a model with poor power management.
Most waterproof bike locks run on three AAA batteries or built-in rechargeable cells—both work, but each has trade-offs. Frequent alarm triggers and remote use drain power fast, so opt for models with power-saving features like key access or smart remotes.
Check for low-battery warnings—LEDs or beeps—so you’re never caught off guard. A weak signal won’t stop thieves.
Also, a solid weatherproof seal (think IP55 or IP66) isn’t just for rain; it keeps moisture out of the battery compartment, preventing corrosion and short circuits. That means longer life, even in constant humidity or downpours.
Don’t just pick any lock—choose one that keeps its juice as tough as its shell.
Locking Mechanism Options
Your lock’s battery life means nothing if the mechanism itself won’t hold up when triggered. You need a locking system that’s both reliable and tough.
Most models give you two ways to arm and disarm: wireless remote or 4-digit keypad, with up to 256 code combinations for security. You’ll often find heavy-duty chains or alloy steel cuffs that wrap around your frame or wheel, and some even pair with disc or brace locks for extra protection.
That combo makes it harder for thieves to pop your lock fast. Look for mechanisms built to handle the outdoors—many have IP55 to IP66 ratings, so rain or splashes won’t mess with performance.
The lock should also activate its 110–130 dB alarm the moment it senses movement, vibration, or tampering. Pick a mechanism that’s both weather-ready and physically strong.
Remote Control Range
How far away can you be and still trust your lock to respond? Most waterproof bike locks with alarms give you a remote range between 20 and 40 meters, though some top models reach up to 66 feet (about 20 meters).
A few newer or premium options extend beyond 40 meters, but don’t expect that from budget or mid-tier locks. You’ll want at least 30 meters of reliable range to disarm or arm the lock comfortably as you approach or leave your bike.
Keep in mind, walls, cars, or crowds can block the signal, and a weak battery cuts range fast. If the remote fails too often, you lose the convenience and theft deterrence.
Choose a lock with solid line-of-sight performance—you’ll rely on it daily.
Build Quality and Materials
A strong build and high-grade materials make all the difference in a durable, reliable waterproof bike lock with an alarm. You need locks made from 8mm to 16mm hardened or manganese steel—they resist cutting and sawing better.
Look for weather-resistant finishes and confirm the lock has an IP66 or IP65 rating so it handles rain and outdoor exposure without fail. Rust- and corrosion-protection keeps the mechanism solid in wet conditions.
Never skip checking the locking mechanism—opt for forged steel bodies and rugged pin or cylinder designs that resist tampering. Every part, whether chain, U-lock, or disc, must be built for outdoor toughness.
Make sure components come with protective covers or housings to minimize wear and extend lifespan. Don’t gamble on flimsy materials—your bike’s safety depends on smart, durable choices.
Invest in quality you can trust.
Alarm Sensitivity Settings
What good is an alarm if it can’t distinguish between a passing gust of wind and someone trying to steal your bike? You need adjustable sensitivity settings to fine-tune how your lock responds to movement.
Most models offer up to seven sensitivity levels, letting you boost detection during tampering or lower it in breezy or high-traffic spots. Set it too high, and minor bumps trigger false alarms; too low, and real threats go unnoticed.
You’ll want to test the settings with light shakes and bumps to find the sweet spot. Many locks pair sensitivity with volume controls—three levels are common—so you can balance alertness and noise.
This flexibility helps whether you’re locking in a packed downtown bike rack or a quiet suburban garage. Adjust wisely, and your alarm becomes a smarter, more reliable theft deterrent.
Frequently Asked Questions
Can These Locks Work in Freezing Temperatures?
Yeah, these locks work in freezing temps—you won’t have issues with cracking or seizing. They’re built to handle ice and snow, so your bike stays secure even when it’s super cold outside.
Do Any Come With Theft Insurance Coverage?
No, you don’t get theft insurance with standard waterproof bike locks. They deter thieves with alarms and durability, but coverage isn’t included.
You’d need separate insurance for that. Some brands offer warranties, but they won’t replace your bike if it’s stolen.
Are Replacement Remotes Available if Lost?
You’re in luck—replacement remotes are available if you lose yours. Most brands sell them separately, so you won’t be left high and dry.
Just check the manufacturer’s website or contact support to get back on track quickly and keep your ride secure without a hitch.
Will the Alarm Drain My Bike’s Battery?
No, the alarm won’t drain your bike’s battery—you power it independently, so your bike’s system stays untouched. It runs on its own sealed battery, designed to last months, even in constant use, without ever touching your bike’s power source.
Can I Use Them on Folding Bikes?
Yes, you can absolutely use them on folding bikes—like a key that fits every lock, these compact alarms adapt to folding frames, securing your ride tightly without hassle, so you’re always ready to roll, protected rain or shine, day or night.
Conclusion
You’re not alone if you’ve worried about bike theft—over 188,000 bikes are stolen annually in the U.S. alone.
That’s one every 3 minutes. Choosing a waterproof bike lock with an alarm gives you real-time peace of mind, even in heavy rain or urban chaos.
A loud 130dB alarm can scare off thieves and draw attention fast. With the right lock, you’re not just securing metal—you’re protecting your freedom to ride.
