Door Exit Push Button

Door Exit Push Button is a common component used in access control systems to allow individuals to unlock and exit through a door from the inside of a secured area.

These push buttons are typically installed near the door on the inside of a building or room and are used in conjunction with electronic door locks, such as magnetic locks or electric strike locks.

Door Exit Push Button features:

• Operation:
  • Normally Open (NO) / Normally Closed (NC) Contacts: The button contains electrical contacts that change state when pressed.
    • NO (Normally Open): Contacts are open (circuit is broken) when the button is at rest and close (circuit is made) when pressed. Often used to activate a lock release.
    • NC (Normally Closed): Contacts are closed (circuit is made) when the button is at rest and open (circuit is broken) when pressed. Less common for exit buttons, but sometimes used for alarm circuits.
    • COM (Common): The common terminal for both NO and NC connections.
  • Momentary Action: Most exit buttons are momentary, meaning the circuit is active only while the button is physically depressed. Once released, the button returns to its original state, and the lock re-engages (unless configured otherwise by the access control system).
  • Latching/Maintained (Less Common for Exit): Some specialized buttons can stay in their activated state until pressed again. Rarely used for primary exit functions due to safety implications (e.g., if a lock remains unlocked inadvertently).
• Design and Construction:
  • Housing Materials: Commonly made from durable materials suitable for frequent use and varying environments:
    • Stainless Steel (Brushed/Polished): Highly durable, corrosion-resistant, and aesthetically pleasing, often used in commercial or public buildings.
    • Aluminum (Anodized): Lightweight, strong, and available in various finishes.
    • Plastic (ABS/Polycarbonate): More cost-effective, often used for internal applications or where a lighter touch is desired.
  • Button Type:
    • Push Button (Tactile): The most common type, providing a clear physical click or depression.
    • Touch/Capacitive: Activated by touch without mechanical movement, offering high durability as there are no moving parts. Often backlit.
    • No Touch/Wave-to-Open (IR Sensor): Activated by waving a hand within a certain proximity, ideal for sterile environments, accessibility, or high-traffic areas to minimize contact.
  • Faceplate Size and Shape: Available in various sizes (e.g., single-gang, slimline) and shapes (rectangular, square) to fit different electrical box types or aesthetic preferences.
• Visual Indicators and Text:
  • Text/Icons: Clearly labeled with “EXIT,” “PUSH TO EXIT,” a door icon, or a combination, ensuring intuitive operation. Multi-language options may be available.
  • LED Indicators: Many buttons include an LED (often green, blue, or red) that illuminates to indicate power, activated status, or system status, providing visual feedback to the user.
  • Backlighting: The entire button or its text/icon may be backlit for visibility in low-light conditions.
• Wiring and Installation:
  • Terminals: Typically feature screw terminals for secure wire connections.
  • Mounting: Designed for flush mounting into standard electrical back boxes (e.g., single-gang, double-gang) or surface mounting with an optional back box.
  • Operating Voltage: Most are low voltage (e.g., 12V DC or 24V DC), compatible with standard access control power supplies.
• Environmental Considerations:
  • Indoor vs. Outdoor: Some buttons are rated for indoor use only, while others have higher IP ratings (e.g., IP65, IP66) for dust and water resistance, making them suitable for outdoor or harsh environments.
  • Temperature Range: Designed to operate reliably across a specified temperature range.