Description:A dedicated access control system for supporting the use of the product.Metal integrated switch made of high-strength zinc alloy die-casting, after high-temperature paint,surface treatment exquisite beauty, never fade, not rust, not by atmospheric corrosion, width 28MM.Suitable for installation in narrow frame doorsSpecifications:Material: Stainless SteelPanel Size: 92x28mm (LxW)Finish Surface: After drawing and injection processingButton part: the use of nickel-plated copper imports of industrial-grade button,the service life of up to 100 million times! Features:1. Special design, no mechanical failure2. Direct wall installation, very easy to use in engineering.3. 500,000 times the test qualified durability4. Multi-contact output, suitable for different types of door lock requirements5. Advanced access control systems designated ancillary products6. Working principle: the button is not pressed before the circuit is open, press the button, the normally open contacts are connected,the circuit is also connected; the other is the open- 92x28mm Stainless Steel Door Bell Push Button Switch Touch Panel