Simple Operation -- Door release button surface/recessed mounting can be used. Simple and quick design, the door can be opened immediately by pressing the button. Materials -- Hollow door access control high quality materials Panel material is aluminum alloy, alloy buttons and PC flame retardant material substrate for safe use. After 100,000 aging tests, durability tests. This product is safe and durable. Easy to install and use -- Door access control system exit button is suitable for installing on hollow door frame and in-built electrical box. Please look carefully at the mounting kit. Scope of application -- Applicable to door / door / exit / automatic control / DIY office access control system. A secure home access system is required. It is used in residence/apartment/office doors and other access control systems of security systems that require personalized access control. Buy with Confidence -- We provide quality service. free return and exchange for 6 months. If you find any quality problems or malfunctions during this period except man-made damage, you can contact us and we will let you know within 24 hours. Satisfied with the response Product Description Brand New Door Access Control System Switch Button. Aluminum shell, safe and durable. User-friendly design, press the button to open the door. A simple press of the button can open the door connected to the access control system. It is used for door access control system. Easy to open the door Stable power supply Long service life Specification Condition: 100% Brand New Panel Material: Aluminum Alloy Knob Material: Alloy Color: As picture shown Size: As picture shown Product feature: Press to close, release to reset Working voltage: 3A @ DC36V Contact output: NO / NC / COM