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Grade 2
Grade 3
Grade 4
Security
Intruder
Grades
Page Index
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Grade 1
What is a Grade 1 Intruder Alarm?
Key Features of Grade 1 Intruder Alarms
1. Basic Intrusion Detection
2. Audible Alarm System
3. Simple Communication Methods
4. Minimal Protection Against Attack
5. Basic User Interface & Control
EN 50131 Grade 1 Alarm Requirements
1. Risk Profile & Application
2. Detection & Sensors
3. Alarm Signaling & Response
4. Tamper Protection & System Security
5. Power Supply Requirements
6. Control Panel & User Interface
Installation & Compliance Standards
Advantages & Limitations of Grade 1 Alarms
Advantages
Limitations
When to Choose a Grade 1 Alarm System
Conclusion
Grade 2
What is a Grade 2 Intruder Alarm?
Key Features of Grade 2 Intruder Alarms
1. Enhanced Intrusion Detection
2. Audible and Monitored Alarm Options
3. Secure Communication & Alarm Signalling
4. Tamper Protection & System Security
5. Backup Power & System Resilience
6. User Interface & Remote Control
EN 50131 Grade 2 Alarm Requirements
1. Risk Profile & Application
2. Detection & Sensors
3. Alarm Signalling & Response
4. Tamper Protection & System Security
5. Power Supply Requirements
6. Control Panel & User Interface
Compliance & Installation Standards
Advantages & Limitations of Grade 2 Alarms
Advantages
Limitations
When to Choose a Grade 2 Alarm System
Conclusion
Grade 3
What is a Grade 3 Intruder Alarm?
Key Features of Grade 3 Intruder Alarms
1. Advanced Intrusion Detection
2. Monitored Alarm System with Police Response
3. Secure Dual-Path Alarm Signaling
4. High-Level Tamper Protection & System Security
5. Backup Power & System Resilience
6. Advanced User Interface & Control
EN 50131 Grade 3 Alarm Requirements
1. Risk Profile & Application
2. Detection & Sensors
3. Alarm Signaling & Response
4. Tamper Protection & System Security
5. Power Supply Requirements
6. Control Panel & User Interface
Compliance & Installation Standards
Advantages & Limitations of Grade 3 Alarms
Advantages
Limitations
When to Choose a Grade 3 Alarm System
Conclusion
Grade 4
What is a Grade 4 Intruder Alarm?
Key Features of Grade 4 Intruder Alarms
1. Maximum Intrusion Detection & Perimeter Security
2. Continuous Remote Monitoring & Police Response
3. Mandatory Dual-Path Alarm Signaling with Encryption
4. Maximum Tamper Protection & Sabotage Resistance
5. Backup Power & Redundancy
6. High-Security User Interface & Authentication
EN 50131 Grade 4 Alarm Requirements
1. Risk Profile & Application
2. Detection & Sensors
3. Alarm Signaling & Response
4. Tamper Protection & System Security
5. Power Supply Requirements
6. Control Panel & User Interface
Compliance & Installation Standards
Advantages & Limitations of Grade 4 Alarms
Advantages
Limitations
When to Choose a Grade 4 Alarm System
Conclusion
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