MSS-321S MAGNASPHERE Door Contact Mount

Review MAGNASPHERE Door Contact Surface Mount

The Magnasphere MSS-321S Door Contact Mount is a versatile and reliable accessory designed for security systems and automation projects. This mount, manufactured by Magnasphere, is engineered to securely hold door contacts, ensuring accurate and consistent detection of door openings and closings.

The mount is constructed from high-quality, durable materials that can withstand the rigors of daily use. It features a sleek, compact design that can be easily installed on walls or doors with the included mounting hardware. The mount is suitable for various door contact sizes, making it a versatile solution for different applications.

One of the standout features of the MSS-321S Door Contact Mount is its adjustable sensitivity. This allows users to fine-tune the sensitivity of the door contact, ensuring that it triggers reliably while minimizing false alarms. The mount also features a built-in LED indicator, which illuminates when the door contact is triggered, providing clear visual feedback.

Installation of the MSS-321S Door Contact Mount is straightforward and can be completed in just a few minutes. The mount comes with a user-friendly manual, which provides clear instructions for installation, as well as troubleshooting tips. The mounting hardware includes screws and anchors for securing the mount to various surfaces, ensuring a stable and secure installation.

The Magnasphere MSS-321S Door Contact Mount is an essential accessory for anyone looking to add security or automation to their home or business. Its durability, adjustable sensitivity, and ease of installation make it a popular choice among security professionals and DIY enthusiasts alike. Whether you're securing a garage door, a commercial entrance, or a residential entryway, the MSS-321S Door Contact Mount is the ideal solution for ensuring peace of mind and protecting what matters most.

The Magnasphere MSS-321S door contact mount is a magnetic door sensor used for security systems or automation projects. Here are some potential pros and cons of purchasing this device:

1. Easy installation: The Magnasphere MSS-321S can be installed without the need for wiring or drilling holes, making it a convenient option for DIY projects or temporary installations.

2. Versatile: This magnetic door contact can be used on various types of doors, including metal and wooden doors, and it can be used both indoors and outdoors.

3. Durable: The sensor is made of high-quality materials and is designed to withstand harsh environments, making it a reliable choice for long-term use.

4. Pet-friendly: The sensitivity of the sensor can be adjusted to prevent false alarms caused by pets up to 55 lbs.

1. Limited range: The sensor has a relatively short detection range of up to 0.15 inches (3.8 mm), which may not be suitable for larger doors or doors with thick frames.

2. Sensitivity may need adjustment: Depending on the door material and the environment, the sensitivity of the sensor may need to be adjusted to prevent false alarms or ensure reliable detection.

3. Battery-operated: The Magnasphere MSS-321S is battery-operated, which means that you will need to replace the batteries periodically.

The Magnasphere MSS-321S door contact mount is a versatile and easy-to-install magnetic sensor that is suitable for various types of doors and environments. Its durability and adjustable sensitivity make it a reliable choice for security systems or automation projects. However, its limited detection range and battery-operated design may be drawbacks for some users. Ultimately, the decision to purchase the Magnasphere MSS-321S depends on the specific requirements of your project and your personal preferences.

If you are looking for a reliable and easy-to-install magnetic door sensor for a DIY security system or automation project, the Magnasphere MSS-321S is a good choice. Its versatility, adjustable sensitivity, and durability make it a reliable and convenient option for various types of doors and environments. However, if you require a sensor with a longer detection range or prefer a wired solution, there may be other options available that better suit your needs.

Details:

Won't break. Magnasphere mss-300 series of recessed and surface-mount contacts offer two or three separate contact outputs; ideal for installations where a single is desired use with multiple independent systems older security contacts have been made with a decades-old technology call the reed switch, which three inherent weaknesses when used as. The mss-300 series provides a single switch solution for monitoring multiple systems intrusion detection and access control home automation applications.

Made with Magnasphere switch technology. Cost competitive. The unique Magnasphere switch used in these devices renders the mss-300 series products virtually unbreakable and highly resistant to permanent contact welding outsider magnetic defeat. Ul and LC listed.

Resistant to contact welding. They are offered in two and three contact configurations both open closed loop variations, depending on installation requirements. Resistant to outside defeat. The MSS-321S from Magnasphere is a surface mount contact with armored cable, 3 switches, 1 open loop, 2 closed loop.

Available in closed and open loop configurations.

specifications alarmpartsacc:

• brand: Magnasphere
• mpn: Mss-321s
• type: Door Contact Surface Mount
• unit type: Oz
• country of origin: United States

general alarmpartsacc:

• category: Business & Industrial > Surveillance Equipment > Systems > Alarm Parts Accessories

seller alarmpartsacc:

• city: springfield, virginia
• rating: 100.0%
• # reviews: 134

offer alarmpartsacc:

• availability: in stock
• started: may 18, 2026
• options: ship-to-home
• sold #: 8
• price: $38.00
• item condition: New

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shipping alarmpartsacc:

• carrier: usps
• transit: 10-14 days
• service: usps ground advantage
• type: calculated
• class: standard

returns alarmpartsacc:

• policy: no returns