M-402 GRI George Risk Security Alarm Magnetic Contact Set

Review GRI George Risk Inc Security Alarm System Magnetic Contact Set

The GE George Risk M-402 Magnetic Contact Set is a versatile and reliable security solution designed to protect your home or business from unwanted intrusion. This contact set utilizes the proven technology of magnetic switches, making it an excellent choice for securing doors and windows.

This set includes two magnetic contacts, each consisting of a magnetic sensor and a normally open (NO) switch contact. The sensor is designed with a strong neodymium magnet that securely attaches to the moving part of the door or window, while the contact is affixed to the fixed part. When the door or window is closed and the two parts are in contact, the circuit is completed, allowing the system to confirm the secure state.

The M-402 Magnetic Contact Set is compatible with most standard security systems and can easily be installed using just a few screws. The contacts are designed with a wide operating temperature range, ensuring reliable performance in various environmental conditions. In addition, they feature a tamper-resistant design to prevent unauthorized disconnection.

This contact set is also equipped with a built-in supervisory function, which periodically checks the contact status and sends an alert if the contact is open. This feature helps ensure that the system is always informed of the status of the protected door or window, providing you with additional peace of mind.

The GE George Risk M-402 Magnetic Contact Set is a valuable addition to any security system, offering reliable protection and easy installation. Its durable design and robust magnetic sensor make it a dependable choice for securing doors and windows, providing you with the confidence and security you deserve.

Pros and Cons of Buying George Risk Security Alarm Magnetic Contact Set M-402-W

The George Risk Security Alarm Magnetic Contact Set M-402-W is a popular choice for those looking to add magnetic contacts to their security system. Here are some pros and cons to help you make an informed decision about purchasing this product.

1. Easy to Install: The magnetic contact set is easy to install and requires no drilling or wiring. It can be used on doors and windows, making it an ideal choice for those who want to secure their homes quickly.

2. Reliable: Magnetic contacts are a reliable way to detect when a door or window is opened. They can detect even the slightest movement, making it difficult for intruders to bypass the alarm.

3. Versatile: The contact set can be used on various surfaces, including metal and wooden doors and windows. It can also be used on sliding doors and windows, making it a versatile choice for different types of homes.

4. Affordable: The contact set is an affordable option for those who want to add extra security to their homes without breaking the bank.

5. Compatible: The magnetic contact set is compatible with most security systems, making it a popular choice among homeowners.

1. Sensitive: Magnetic contacts can be sensitive to vibrations and may trigger false alarms if the door or window is hit or closed too hard.

2. Limited Range: The magnetic contact set has a limited range, and it may not be suitable for large homes or buildings.

3. Battery-Operated: The contact set is battery-operated, and it may require frequent battery replacements, depending on the usage.

4. Weather-Dependent: The magnetic contact set may not function properly in extreme weather conditions, such as heavy rain or snow.

The George Risk Security Alarm Magnetic Contact Set M-402-W is an affordable and reliable option for those looking to add magnetic contacts to their security system. It is easy to install, versatile, and compatible with most security systems. However, it has some limitations, such as sensitivity to vibrations, limited range, battery-operated, and weather-dependent.

If you are looking for a reliable and affordable magnetic contact set for your security system, the George Risk Security Alarm Magnetic Contact Set M-402-W is an excellent choice. However, if you have a large home or building or require a longer range, you may want to consider other options, such as wireless or wired contacts. Additionally, if you are concerned about false alarms, you may want to invest in contacts with adjustable sensitivity settings. Overall, the magnetic contact set is a worthwhile investment for those who want to add an extra layer of security to their homes without breaking the bank.

Details:

Upc: 1 also known as: m402w Gri M-402-w magnet, white, 3/8 x 2-9/16, inside 1/2 5/8 4 industrial surface screw mount case. Gri M-402-w magnet, white, 3/8 x 2-9/16, inside 1/2 5/8 4 industrial surface screw mount case: the is a white magnet measuring 2-9/16 that encased in an industrial surface screw mount case. The plastic casing on one of the contacts is beginning to tan from age, however nothing that would affect functionality.

specifications alarmpartsacc:

• brand: Gri
• mpn: M-402
• lot no: A1284
• type: Magnetic Door Contact
• unit type: Unit
• unit quantity: 1 Pair
• warehouse location: Ff/b2
• country of origin: United States
• upc: 697625016631

offer alarmpartsacc:

• started: may 29, 2026
• availability: in stock
• best offers: true
• in stock #: 1
• price: $12.99
• item condition: New – Open box
• sold #: 5
• options: ship-to-home

shipping alarmpartsacc:

• type: calculated
• transit: 4-7 days
• service: usps first class, usps priority mail, ups 2nd day air, usps priority mail express
• carrier: usps, ups
• class: standard, expedited

seller alarmpartsacc:

• city: goffstown, new hampshire
• # reviews: 15196
• rating: 100.0%

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• other
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• paid by: buyer
• method: money back
• policy: returns accepted
• time: 30 days

general alarmpartsacc:

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