Electronic security systems Security systems 118 Design and construction 75 Security measures 66 Electronic alarm systems 58 Global system for mobile communications 30 Dwellings 24 Home automation 22 Electronic controllers 20 Electronic circuits 19 Programmable controllers 18 Wireless communication systems 17 Electronic surveillance 15 Burglar alarms 14 Buildings 13 Equipment and supplies 10 Closed-circuit television 9 Automatic control 8 Electric lighting 8 Fire alarms 8 Automation 7 Houses 7 Multimedia systems 7 Burglary protection 6 Computer programs 6 Digital techniques 6 Embedded Internet devices 6 Image processing 6 Management 6 Power resources 6