SDL09 U-lock + Chain Combo | Quenched Steel Anti-Theft Lock with Alarm Function

Brief Introduction
SDL09 shares the same quenched steel structure as SDL08, with the upgraded alarm lock head as its highlight. This is a U-lock & chain combination lock with built-in alarm system. Constructed from quenched steel, it delivers strong shear resistance and high security. When vibration or prying is detected, the alarm will trigger to scare off thieves. The chain is wrapped in thick fabric sleeve to prevent scratching vehicle paint. It is widely suitable for bicycles, e-bikes, scooters, perfect for bicycle accessory wholesalers and bulk procurement.

Material & Craftsmanship
High-strength quenched steel for U shackle and chain links. Wear-resistant woven fabric protective sleeve. Robust alarm lock housing, sensitive vibration sensing alarm module, durable copper key cylinder.

Key Features

1. Same heavy-duty quenched steel structure as SDL08, excellent anti-cut and anti-pry performance.
2. Upgraded alarm lock cylinder: loud alarm will activate under vibration, impact or prying to warn and deter theft.
3. U-lock + chain dual anti-theft structure for double protection.
4. Fabric outer sleeve protects bike paint surface; flexible chain can lock vehicles to railings or posts.
5. Key unlocking design, easy to operate, stable mechanical & alarm system.
6. OEM available: custom laser engraved logos, colors and packaging.

Application Scenarios
City commuter bikes, mountain bikes, e-bikes, electric scooters, outdoor gates and equipment.

OEM & ODM Service
Custom laser-engraved logos, multiple color selections and customized packaging. Small-batch mixed orders supported.