metallic magnetic contact

Description

• Metallic Construction: The housing is made of durable metals like steel or aluminum, making the contact resistant to physical tampering and wear.
• Two-Part System: The device consists of two components: a magnet and a sensor containing a reed switch. The sensor is mounted on the frame and the magnet on the door or window.
• Magnetic Operation: When the door is closed, the magnet is near the reed switch, keeping the circuit in a specific state (e.g., closed). When the door opens, the magnet moves away, breaking the magnetic field and changing the circuit's state.
• Signal Trigger: The change in the circuit's state (open or closed) sends a signal to the connected security or alarm panel, indicating a "door opened" event. 

• Tamper Resistance and Detection: The strong metallic casing resists forced entry. Some advanced models include separate tamper switches that trigger an alarm if the contact itself is tampered with or removed.
• Configuration Options: Contacts are available in two main configurations:
  • Normally Closed (NC): The circuit is closed when the door is closed. This is the most common type of alarm, as opening the door breaks the circuit and triggers the alarm.
  • Normally Open (NO): The circuit is open when the door is closed. The circuit closes when the door is opened.
• Compatibility: They can be integrated into a wide range of wired or wireless security systems, access control systems, and home automation systems.
• Wiring and Connectivity: They typically have two wires for the main circuit and may have additional wires for tamper monitoring.
• Weatherproof Options: Some models are rated for outdoor use to withstand environmental conditions.