Round input button for exterior or interior doors that require key input and security. All locks can be opened with a single switch. Key benefits - Provides secure access for doors that require key input, with a single switch to unlock all connected locks. - Durable construction with high-grade copper internal components and a stainless steel button. - Matte black coating offers corrosion resistance and a clean, modern look. - Smooth, reliable button action for easy operation and quick entry. - Sturdy metal structure, built for strength and long service life. - Includes all fittings for fast, straightforward installation. - ANSI-class compliant with high cycle durability, tested to up to 200,007 cycles. Specifications and features - Material: high-grade copper internal components, stainless steel button - Finish: matte black coating, corrosion resistant - Construction: solid metal body with durable fittings included - Operation: round input button suitable for doors that require key input - Durability: ANSI-class standard, rated for up to 200,007 cycles - Installation: includes all fittings for easy setup - Function: enables all linked locks to be opened with a single switch Use scenarios - Residential front entry or exterior door that requires secure key input and simplified access with one switch - Small office or commercial space with multiple secured doors that can be opened together by a single switch - Interior secured areas such as server rooms, storage rooms, or restricted offices that require key input and durable, reliable operation With its robust metal construction, secure key-input design, and easy installation, this round input button is a dependable choice for doors that demand secure, convenient access.