SK777S(sfic): World’s Only Keyless Bottom Rail Lock SK777S(sfic) | SFIC Key Override | No-Drill Replacement for CRL 777S, FHC R777, ILCO BRL | Professional Grade Mechanical Storefront Security

The SK777S(sfic) is the professional’s choice for secure, keyless storefront management. It packs all the features of the SK777 but with added security and simplified control. MODEL: SK35 All the pictures can be enlarged except the screenshot of the Video on youtube. 1： World’s Only Keyless Solution: The first 100% mechanical keypad for bottom rails. Perfect for business owners who want to ditch the keys without sacrificing reliability. 2： SFIC Key Override: Features a Small Format Interchangeable Core (SFIC). This allows for seamless integration into existing master-key systems—a must-have for professional facility managers. 3： Direct "No-Drill" Retrofit: A parallel, drop-in replacement for CRL 777S, FHC R777, and ILCO BRL. Fits standard rail cutouts perfectly—no drilling or rail modification required. 4： Rapid Code Management: The SK35 is engineered for high-turnover environments. Its modular design makes changing access codes faster and easier than any other mechanical lock on the market. 5： Enhanced Security: Supports customizable 3-to-5 digit codes for increased combinations and peace of mind. 6： Note for Pros: For retrofitting on doors without a threshold step, unhinging the glass door is required to remove the old mortise. Ideal for door manufacturers and service crews. Installation of the Bottom Rail Lock Instruction of SK11PLUS,SK15,S331,SK35