Waterproof TTlock Commercial Storefront Smart Lock SK-K3 — Fingerprint Password Keyless Lock for KFC-style Aluminum Shop Front Doors

Commercial Storefront Smart Lock for Retail & Chain Stores

The SK-K3 is a waterproof aluminum-profile smart lock designed specifically for narrow-frame KFC-style shop front doors, glass sliding doors, and retail store entrances. It replaces clunky mechanical store locks with a keyless system that lets managers issue, time-limit, and revoke staff credentials from the TTlock app in seconds.

Key Features

• 5 unlocking methods: fingerprint, PIN code, IC card (13.56 MHz), mechanical emergency key, and TTlock app (Bluetooth + optional WiFi gateway).
• Outdoor waterproof rating for exposed storefront, patio, and entrance installations.
• Grade C anti-pick lock cylinder for high-security commercial use.
• Aluminum alloy housing that matches narrow KFC-style / broken-bridge aluminum doors without drilling a mortise.
• Cloud access & audit trail: see who opened the door, when, and from which store in the TTlock cloud.
• Time-limited & one-time passcodes for cleaners, couriers, and contractors — no physical key handover.
• Offline PIN + IC card backup — the lock keeps working even when the phone or gateway is offline.
• Low-battery alert in the app, plus emergency USB-C power input.

Typical Applications

• Fast-food and cafe chain storefronts (KFC / McDonald’s / coffee-shop style narrow aluminum doors)
• Retail boutiques, convenience stores, and supermarket back doors
• Jewelry & watch shops, pharmacy chains
• Office and co-working building entrances
• Outdoor courtyard, garden, and aluminum sliding gates

Technical Specifications

Model	SK-K3
Unlock ways	Fingerprint + PIN + IC Card + Key + TTlock App
Smart app	TTlock (BLE), optional WiFi gateway for remote unlock
Lock cylinder grade	Grade C (anti-pick)
Housing material	Aluminum alloy
Data storage	Cloud (TTlock cloud) + offline local memory
Door type	KFC-style narrow aluminum profile, sliding / swing glass storefront doors
Waterproof	Outdoor-rated for exposed storefront use
Power	4 x AA batteries (included), emergency USB-C input
Origin	Guangdong, China

Wholesale, OEM & ODM

The SK-K3 is available for bulk wholesale, OEM logo, and custom packaging. We supply security distributors, system integrators, and chain-store procurement teams across the USA, UK, Australia, Southeast Asia, and the Middle East. Contact us for FOB Shenzhen pricing, MOQ, lead time, and private-label options.

Rainbow Sky — smart lock OEM/ODM manufacturer since 2009. Send your store plan and door thickness, and we will recommend the right lock model.