Door Contact Sensor KN-CA59L — No name (KN-CA59L)

Wired door contact sensor KN-CA59L is a simple magnetic switch designed to detect the opening and closing of doors, gates and other access points. The sensor provides a normally open / normally closed magnetic contact interface suitable for wired connection to alarm systems, access control panels or automation controllers. Its compact form and straightforward wiring make it suitable for basic intrusion monitoring and status reporting in homes, offices and commercial premises.

Advantages

The KN-CA59L offers a compact and reliable magnetic contact with a low-profile housing that is easy to install on door frames or gate posts. Its wired connection ensures continuous power-independent operation and direct integration with standard alarm and control systems. The construction is intended for indoor use and provides consistent detection performance for typical door and window applications.

Suitable for

• Basic intruder alarm zones on doors and windows
• Access point monitoring for offices and commercial entrances
• Integration with wired access control panels and automation controllers
• Status feedback for gates, cabinets or service doors

Key specifications

• Type: Wired magnetic contact sensor
• Contact interface: Magnetic reed switch (NO/NC configuration)
• Mounting: Surface mount for door frames, windows or gate posts
• Operating environment: Indoor use
• Cable connection: Fixed wired leads for direct connection to control devices
• Dimensions: Compact, low-profile design suitable for concealed or visible mounting

How to use

Mount the sensor and magnet so that the magnet aligns with the switch when the door or gate is closed, maintaining the manufacturer’s recommended gap. Route the wired leads to the alarm panel or controller and connect to the appropriate input terminals, observing polarity and any zone wiring requirements. Configure the receiving system to use the contact as either normally open or normally closed according to the intended alarm logic. Test the installation by opening and closing the door to verify reliable state changes and correct reporting to the control device.

Usage recommendations

Install the contact on clean, dry surfaces and avoid locations exposed to direct weather or excessive moisture. Use appropriate cable glands or conduit where wires pass through walls to prevent mechanical damage. When integrating with security or access control systems, follow the system manufacturer’s wiring and zone programming guidelines and perform regular functional checks.