1. Alarm Sensors & Motion Detectors Items
  2. sku: 7524511449581602
  3. ADEMCO 343P

ADEMCO 343P Overhead Door Contact Nos Magnetic Security 57L Sensor

343p Ademco 57l Overhead Door Contact - Vintage Nos Magnetic Security Sensor

( Brand: Ademco ), ( Manufacturer Part Number: 343P ), ( Model: 57L / 343P ), ( Type: Magnetic Contact / Proximity Sensor )

Review ADEMCO 57l Overhead Door Contact Vintage Nos Magnetic Security Sensor

The ADemco 343P 57L Overhead Door Contact is a magnetic security sensor designed for use with overhead doors, providing reliable protection against unauthorized entry or opening. This contact is part of the ADemco Vista Series, which is known for its high-quality and versatile security solutions.

The sensor consists of two parts: a magnet and a switch. The magnet is installed on the door, while the switch is mounted on the door frame or jamb. When the door is closed, the magnet attracts the switch, completing an electrical circuit. If the door is opened or the magnet is removed from the switch, the circuit is broken, signaling an alarm condition.

This contact is designed for use with doors up to 57 inches wide and can be used with single or sectional doors, making it a versatile choice for various applications. It is also suitable for use with doors that have insulation, as it can detect the break in the magnetic field even through the insulation.

The ADemco 343P 57L Overhead Door Contact is easy to install and comes with mounting hardware and a wire connector for simple integration with most security systems. It is also compatible with the ADemco VISTA Series Control Panels, making it a great choice for those already using this security system.

This contact is constructed from high-quality materials, ensuring durability and long-lasting performance. It is also resistant to weather conditions, making it suitable for use in both indoor and outdoor environments.

In summary, the ADemco 343P 57L Overhead Door Contact is a reliable and versatile magnetic security sensor designed for use with overhead doors. Its easy installation, compatibility with various security systems, and durable construction make it an excellent choice for those seeking to enhance the security of their doors.

The Ademco 343P 57L Overhead Door Contact is a magnetic security sensor designed for use with overhead doors. This device helps ensure the safety and security of your garage or other overhead doors by detecting if they are fully closed and sending a signal to your alarm system. Here are some pros and cons of buying a Ademco 343P 57L Overhead Door Contact:

Pros:

1. Easy installation: The sensor comes with mounting hardware and can be installed with just a few screws, making it a relatively simple process.

2. Magnetic design: The sensor uses a magnetic design, which means that it will detect if the door is fully closed and in contact with the sensor, providing reliable security.

3. Compatibility: The Ademco 343P 57L Overhead Door Contact is compatible with most alarm systems, making it a versatile choice for homeowners.

4. Durable construction: The sensor is built to withstand the rigors of daily use, with a weather-resistant housing and sturdy components.

Cons:

1. Limited range: The magnetic sensor has a relatively short range, so it may not be suitable for larger garages or other spaces with wide doors.

2. Requires power source: The sensor requires a power source, either battery or hardwired, which may add to the cost and complexity of installation.

3. May not work with certain door materials: The sensor may not work properly with some types of doors, such as those made of aluminum or other non-ferrous materials.

In conclusion, the Ademco 343P 57L Overhead Door Contact is a reliable and effective security sensor for overhead doors. Its easy installation, magnetic design, compatibility with various alarm systems, and durable construction make it an attractive option for homeowners. However, its limited range and requirement for a power source are potential drawbacks that should be considered.

Based on the pros and cons, I would recommend the Ademco 343P 57L Overhead Door Contact for homeowners with smaller garages or other overhead doors where a reliable and easy-to-install magnetic sensor is desired. It is a solid choice for those looking to enhance the security of their home.

Details:

Ademco 57L Overhead Door Contact - Vintage NOS Magnetic Security Sensor Heavy-Duty Construction: designed for industrial and commercial environments to withstand being driven over or stepped on. Complete Set: Includes the floor-mount switch housing, door-mount magnet, and original factory box. Armored Protection: Includes a flexible armored cable to prevent wire cutting or accidental damage. Compatibility: Works with most standard hardwired security alarm panels Honeywell, Ademco, etc.

part #: 343p price

  • $53.99

specifications secimotions:

  • brand: Ademco
  • mpn: 343p
  • model: 57l / 343p
  • type: Magnetic Contact / Proximity Sensor

offer secimotions:

  • started: April 2, 2026
  • quantity: 3
  • options: Ship-to-home
  • best offers: True
  • sold: 0
  • availability: In Stock

general secimotions:

  • Surveillance Smart Home Electronics > Home Surveillance > Sensors Motion Detectors
  • condition: Open box

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seller secimotions:

  • city: Winchester, Virginia
  • rating: 99.9%
  • # reviews: 962

shipping secimotions:

  • cost: $9.81
  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
  • type: Calculated
  • transit: 5-11 Days

returns secimotions:

  • policy: No Returns
type: magnetic contact / proximity sensor,
category: electronics > surveillance smart home electronics > home surveillance > sensors motion detectors, sku: 7524511449581602,

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