TY - BOOK AU - Trimmer,H.William TI - UNDERSTANDING AND SERVICING ALARM SYSTEMS SN - 9780750672061 U1 - 621.38928 23 PY - 1999/// CY - Boston PB - BUTTERWORTH-HEINEMANN KW - Burglar alarms KW - Maintenance and repair KW - Fire alarms N2 - Provides coverage of microcomputerized controls, sophisticated detection devices, and methods of alarm reporting. This book reflects the security industry's high-tech advances and is useful for the alarm dealer, installer, and technician. It presents topics ranging from the basics of electricity to the equipment installation and repair ER -