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Pickup available at Thunderbolt • Countryside, IL
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AP
Thunderbolt Alarm Padlock with 110dB Siren
Ideal for the first layer of defense on Box Trucks and Cargo Trailers.
Keep your valuables safe with the Thunderbolt® Alarm Padlock, designed with an advanced motion sensor that activates a powerful 110dB alarm, effectively deterring thieves before they strike. Engineered for durability, this lock features a corrosion-resistant body and a thick, reinforced stainless steel shackle, ensuring maximum strength and security.
For added versatility, the Thunderbolt® Alarm Padlock offers two modes: engage the alarm for heightened protection or switch to silent mode by simply reversing the shackle. Its weatherproof design guarantees reliable performance in all conditions, while the dual high-collar body prevents access to bolt cutters for enhanced defense.
Included with the padlock are three high-security keys and two interchangeable hasps: the short hasp with a 1" opening and the tall hasp with a 1.25" opening, offering flexibility for various uses. The alarm automatically resets itself, and the lock comes with two sets of pre-installed batteries for immediate, hassle-free operation.
For an added layer of protection, a visible Thunderbolt® warning label is prominently displayed on the lock, signaling its built-in siren to potential intruders. Ideal for securing box truck roll-up doors, trailers, motorcycles, bikes, construction equipment, and more, the Thunderbolt® Alarm Padlock delivers unparalleled peace of mind and top-tier security.
Alarm Padlock Warranty and Care Instructions
Warranty: This alarm padlock comes with a 6-month warranty from the date of purchase, which includes coverage for the batteries.
Water Damage: Our locks are built tough, but like any mechanical device, water getting inside can cause internal damage over time. To help extend the life of your lock, we recommend using a cover or shield to protect it from direct rain and moisture.
Performance in Cold Temperatures: Please be aware that the padlock and/or the alarm may not function at full capacity, or at all, in freezing temperatures. We recommend lubricating the key cylinder periodically.
Couldn't load pickup availability
Pickup available at Thunderbolt • Countryside, IL
Usually ready in 24 hoursPairs well with

Alarm Padlock
I bought this for a cross country move (back of a Uhaul truck). It worked great out of the box, and the motion sensors worked perfectly! After the first night, it started having issues with the motion sensors. We did go through rain, and I did read it wasn't IP rated but could sustain some rain. When we hit the half way point, it wasn't registering any motion. I opened it up and swapped batteries. I noticed some water in with the battery cell compartment. Even with the unit dried out and batteries replaced, it never would go off with motion. So it became a expensive, glorified lock with no alarm feature. The last 2 days of travel were full of anxiety when left overnight at hotels. So, I would not recommend this unit until they come up with an IP rated unit.
Great product overall. However, it was advertised on a box truck and it does fit through the 3 piece latch on my roll-up door. The high collar only fits thru 2 of the 3. Still functionally locks the door but less secure than ideal. Other applications would work even better.
Excelente
I have a contractor truck that I have many of the important tools for my trade. Not only is their system easy to install their support and help team is beyond wonderful. If you are looking for security, then get this system without hesitation.
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Great locks work great and there that great . A++++
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