One-time-use stainless steel screws for tamper-evident installation. Tamper-resistant, solid sliding cylinder with a multi-hole design enables flush or recessed installation and allows easy relocation of the installation site. Lock body made of zinc alloy with a robust component that withstands harsh weather and heavy wear. Four digital lock mechanisms provide 10,000 possible combinations, offering security and convenience compared with traditional sliding door locks. The numeric code lock features a rust-resistant coating and corrosion protection properties. Use scenarios: - Exterior doors or entryways that require flush or recessed mounting and the option to relocate installation sites. - Outdoor gates or weather-exposed doors where corrosion resistance and durability are important. - Commercial properties with multiple doors that benefit from a large combination space for secure access management.