| skos:altLabel | - Security
- security
- security systems
- Magnetic
- security system
- Microwave
- Alarm systems
- Burglar Alarms
- Burglar alarms
- Electrostatic field
- Microwave detectors
- Near-IR beam break
- Ported coaxial cable
- Security Alarms
- Security alarm#Design
- Security alarms
- Security electric fence
- Security systems
- Taut wire
- alarm
- alarms
- alerts a user
- burglar alarm
- burglar alarms
- buried RF
- electrostatic field
- intruder alarm
- microphonic cable
- ported coaxial cable
- ported coaxial cable sensor
- security alarm
- security electric fence
- security electrical equipment
- security hardware
- silent alarms
- track-intrusion systems
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