Electronic locking devices
In non-technical terms, this book covers the appropriate selection and installation of every system component currently available, along with trouble-shooting techniques. It is a handbook for installers, and a product reference and system design guide for manufacturers' reps and end user's
23 pages matching electromagnet in this book
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access control actuator alarm alternating current amps armature audible automatic door basic battery bolt cable cause coil components condition conductors connected control devices current draw current flow DC power DC voltage deadbolts decibels designed diode direct current door control door operator door status switch egress electric deadbolt Electric locking circuit electric locking devices electric locking system electric strike electromagnet energized equipment exit device fail-safe fail-secure frame hardware high-security holding force hookup indicate input insulated interlock John Sanger latch latchbolt light load Locknetics low-voltage magnetic field manufacturers mechanical meter mode monitoring switches mortise lock mounting multimeter National Electrical Code NFPA normally closed normally open Ohm's law options output voltage power source power supply rated relay release switch require resistance safety security system selected shown in Figure signal solder solenoid solenoid-operated specific standard standby power terminals tion transformer troubleshooting unit usually voltage spike volts wire nut wire runs