Fingerprint Bluetooth Chain Lock (Tuya App)

Heavy-duty fingerprint chain lock with Bluetooth & Tuya Smart app control.

Key Features

• Fingerprint + Bluetooth + Tuya app unlock
• Hardened alloy steel chain
• Cut / tamper alarm
• IP66 weatherproof

Specifications

Recognition	Semiconductor fingerprint sensor
Connectivity	Bluetooth, Tuya Smart app
Chain	Hardened alloy steel, Ø10 mm
Battery	Rechargeable, USB-C
Protection	IP66

High-security chain lock unlocking by fingerprint, with Bluetooth connectivity and Tuya Smart app control. Hardened steel chain resists cutting, while the app supports lock status, multiple fingerprint management and alarm notifications. Ideal for e-bikes, motorcycles, gates and warehouses.

Where a Fingerprint Chain Lock Is the Right Choice

• E-bike and motorbike fleets — wrap the frame and a fixed post; a padlock has nothing to lock into here
• Double gates and yard gates — the chain reaches around both leaves where a hasp does not exist
• Poles, railings and temporary sites — secure equipment where you cannot drill or weld an anchor

Keyed vs Combination vs Fingerprint Chain

	Keyed chain	Combination chain	Fingerprint chain
Credential copied or shared	Keys duplicate cheaply	Code passed around	No — enrolled finger
Rider or user leaves	Re-key or cut the chain	Change code fleet-wide	Remove one fingerprint
Opening record	None	None	Log via the Tuya app
Cut response	Silent	Silent	Cut / tamper alarm
Weather exposure	Key freezes, dials jam	Dials jam in cold	IP66 body, sensor reads below skin

Running a Chain Lock Fleet

• Specify the chain for the threat, the biometric for the audit. A Ø10 mm hardened alloy chain resists hand-held bolt cutters; the fingerprint layer adds credential control the metal cannot.
• Plan winter credentials. Thick gloves defeat most capacitive readers — budget a logged passcode for deep-cold weeks instead of a shared mechanical key.
• Manage the fleet in the app. Status, alarms and user lists for every lock live in one Tuya account.

Frequently Asked Questions

How is a fingerprint chain lock better than a keyed chain for e-bike fleets?

A keyed chain can be copied, a combination can be shared, and neither produces an audit trail. A fingerprint chain records who unlocked which bike at what time. When a rider leaves the programme, their fingerprint is removed from every lock in the fleet at once — no re-keying, no lock replacement.

What chain gauge should I specify for a shared e-bike fleet?

A 10 mm case-hardened chain with a hardened lock body resists hand-held bolt cutters and slows angle-grinder attacks. The fingerprint layer does not add cutting resistance — it adds credential control and event logging. Specify the chain for the threat level and the biometric for the audit trail.

Will the fingerprint sensor work with gloved fingers?

Most capacitive sensors cannot read through thick gloves. For winter fleets, plan the credential structure: fingerprint for shoulder seasons, a logged passcode for deep-cold weeks, and no shared mechanical key that defeats the audit trail.

How long does the battery last on a heavily used chain lock?

A lock opened 20 times a day typically runs six to twelve months on a single charge in temperate weather, and significantly less in continuous sub-zero conditions. Bluetooth connection attempts cost more power than unlock events, so locks in constant phone range drain faster than occasional-use locks.

Do the enrolled fingerprints ever leave the chain lock?

No. Template extraction and matching happen inside the lock's secure element; the enrolled fingerprint data is never transmitted to the app or the cloud. The app receives only event records (which finger, when, open or close), not biometric data.

What triggers the alarm?

Cut and tamper events — attacking the chain or prying the lock body raises an alarm through the lock and notifies the app, rather than waiting for someone to notice the damage.

Can chain length and finish be customized?

Yes. Chain length, finish, logo and packaging are standard OEM options, and the lock core stays consistent across the family — useful when a brand sells padlock and chain side by side.

How does it fit into the Tuya ecosystem?

As a standard Tuya profile: users, sharing, logs and alarm notifications are managed in the Tuya Smart app without custom development, and one account can hold the whole fleet alongside other Tuya devices.