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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


A look at home security systems that make a noise when triggered.
APARTMENT LIFE Feb 1979 (v.11#2) pg. 42

Cyber Alert. A talking intruder alert. Voice synthesizer circuit talks about any impending break-in, thus discouraging the criminal. The concept can also be applied to talking clocks, talking toys, talking doorbell, etc. Est. cost: $80.
COMPUTERCRAFT Jan 1992 (v.2#1) pg. 44

A photonic door and window intrusion alarm circuit.
COMPUTERS & ELECTRONICS Feb 1983 (v.21#2) pg. 118

Experimenting with Coleco's Adam computer. How to connect an external speaker and amplifier. How to use Adam as an intruder alarm via the joysticks.
COMPUTERS & ELECTRONICS Apr 1984 (v.22#4) pg. 22

Circuit for a home alarm system that can handle both normally-open and normally-closed switches. Est. cost: Under $10.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1979 (v.35#1) pg. 100

Low-cost, solid-state alarm system utilizes normally closed circuits with any convenient 12 v.d.c. sounding device. Includes a battery back-up circuit for the a.c. line supply.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1984 (v.40#1) pg. 20

List of X-10 modules and controllers to make an effective intruder-alarm.
ELECTRONIC HOUSE May-Jun 1990 (v.5#3) pg. 6
Added Info ELECTRONIC HOUSE Jul-Aug 1990 (v.5#4) pg. 6

Suggested wiring for a burglar alarm system (using either the wireless X-10 Powerhouse system or burglar interface module) that is also capable of activating other X-10 modules (connected to an audio system, telephone dialer, etc.) whenever the security system is tripped.
ELECTRONIC HOUSE May-Jun 1992 (v.7#3) pg. 34

Wire-free security. What is available in radio frequency (RF) security systems. Tips on selection and installation.
ELECTRONIC HOUSE May-Jun 1994 (v.9#3) pg. 34

Alarm screens. How window screens can be hooked into any residential alarm or home automation system so that exterior windows can be open and still have perimeter alarm protection.
ELECTRONIC HOUSE May-Jun 1994 (v.9#3) pg. 44

Battling burglaries. Advice on selecting and installing an electronic security system. Includes tips on understanding the specifications for passive infrared detectors.
ELECTRONIC HOUSE Sep-Oct 1995 (v.10#5) pg. 49

How to arm the X-10 DS7000 security system automatically using a modified wireless remote.
ELECTRONIC HOUSE Sep-Oct 1995 (v.10#5) pg. 57

Security systems to install yourself. Eight different systems are compared. Tips on selection and installation.
ELECTRONIC HOUSE Oct 1996 (v.11#5) pg. 54

Phony burglar alarm consists only of a battery-powered imitation alarm-status display with red and green LEDs. Est cost: $20.

Build a smoke security alarm. Let your smoke detector double as a security alarm which includes door exit and entrance time delays.

Super burglar chaser. This accessory for any alarm circuit creates brilliant flashes of white light and a loud, irritating sound from a metal horn buzzer. Est. cost: $19 (kit).

Ultrasonic burglar alarm can also be used as a proximity detector or a fire alarm. Works up to 20 feet.
ELECTRONICS ILLUSTRATED Jan 1969 (v.12#1) pg. 85

This alarm circuit handles both normally-open and normally-closed switches. Power supplied by 6-volt lantern battery. Est. cost: $5.
ELECTRONICS ILLUSTRATED Mar 1971 (v.14#2) pg. 62

Improving the security of a hard-wired security system by hiding a known resistance in the loop.
ELECTRONICS NOW Dec 1996 (v.67#12) pg. 10

Phone-line monitor. A cut telephone line will trigger your home security system. Est. cost: $70 (kit).
ELECTRONICS NOW Mar 1997 (v.68#3) pg. 46
Added Info ELECTRONICS NOW May 1997 (v.68#5) pg. 10

Schematic for a sensitive intrusion alarm.
ELECTRONICS WORLD Jan 1970 (v.83#1) pg. 87

Light-sensitive burglar alarm and fire alarm can be triggered by the glare of a lighted match.
ELECTRONICS WORLD Jun 1970 (v.83#6) pg. 58

Solid-state electronic intrusion alarm uses two different detection circuits. Alarm sounds when circuit is either shorted or broken.
ELECTRONICS WORLD Sep 1971 (v.86#3) pg. 31

Circuit for photoelectric beam burglar alarm.
ELECTRONICS WORLD Sep 1971 (v.86#3) pg. 82

Burglar alarm. A portable or permanent unit using reed switches. Est. cost: $6.
ELEMENTARY ELECTRONICS Nov-Dec 1966 (v.3#2) pg. 63

Simple two-transistor time delay circuit sensitive enough to be used in a burglar alarm, door opener, baby monitor, etc. Est. cost: $10.
ELEMENTARY ELECTRONICS Nov-Dec 1966 (v.3#2) pg. 100

Easy-to-build proximity sensor adds to the detection ability of your existing burglar alarm. Use with any system that uses a normally closed sensor circuit. Protects any metal object that can be isolated from earth ground.
ELEMENTARY ELECTRONICS Nov-Dec 1974 (v.14#6) pg. 77

How to wire doors and windows and how to install foil on glass when wiring your own burglar alarm system.
ELEMENTARY ELECTRONICS Sep-Oct 1975 (v.15#5) pg. 51

Basic control module for burglar and fire alarm system lets you monitor as many door, window, pressure or fire detectors (switches) as you will ever need. Uses two very inexpensive integrated circuits costing less than $2.
ELEMENTARY ELECTRONICS Mar-Apr 1977 (v.17#2) pg. 68

How to modify your burglar alarm to make it tamperproof. Includes a silent testing system, removal of vulnerable wires and battery to a better location, reinforcing the bell (gong) box, and installing additiional tamper switches, or moving them to better locations.
ELEMENTARY ELECTRONICS Nov-Dec 1977 (v.17#6) pg. 40

Burglar-proof your home. A guide to alarm systems and security devices.
FAMILY CIRCLE Aug 10 1982 (v.95#11) pg. 8

How to install a burglar alarm system yourself.
FAMILY CIRCLE Jul 12 1983 (v.96#10) pg. 124

How to make a burglar alarm system for less than $50. System has a loud 10" alarm bell, door and window trippers, a 6-volt battery power source and a key switch for activating the system from outside.
FAMILY HANDYMAN #128 Aug 1971 (v.21#6) pg. 56

A look at the various burglar alarm systems available for the home.
FAMILY HANDYMAN #168 Dec 1975 (v.25#9) pg. 42

A look at the new, small, battery-powered burglar alarms and how to select the one right for you.
GOOD HOUSEKEEPING Dec 1979 (v.189#6) pg. 278

Wireless home burglar alarm system. Build and assemble your own system which incorporates a new method of RF remote sensing that overcomes limitations of some commercial systems.
HANDS-ON ELECTRONICS Summer 1985 (v.2#5) pg. 33

Budget burglar alarm features include a key switch, instant/delay switch, alarm memory, LED indicators, pre-alarm sounder, trickle charger, automatic reset, etc.
HANDS-ON ELECTRONICS Nov-Dec 1985 (v.2#6) pg. 91

Home and car alarm will handle both normally-open and normally closed switches. A relay controls almost any warning device (bell, siren, etc.) and sounds for 5 minutes before shutting itself off. Alarm circuit is battery powered. Est. cost: $7.
HANDS-ON ELECTRONICS Jan-Feb 1986 (v.3#1) pg. 62
Added Info HANDS-ON ELECTRONICS Feb 1988 (v.5#2) pg. 4
Added Info HANDS-ON ELECTRONICS May 1988 (v.5#5) pg. 4

Tips on installing burglar-alarm foil on windows.
HANDS-ON ELECTRONICS Sep-Oct 1986 (v.3#5) pg. 4

Portable, key-operated burglar alarm can be attached to almost anything, at any angle, and is fully self-contained. A home-made "motion detector" switch is the heart of the unit.
HANDS-ON ELECTRONICS Sep-Oct 1986 (v.3#5) pg. 89
Added Info HANDS-ON ELECTRONICS Mar 1987 (v.4#3) pg. 6
Added Info HANDS-ON ELECTRONICS Oct 1987 (v.4#10) pg. 4

Schematic diagram for an infrared transmitter to be incorporated into a burglar alarm system. Uses an ordinary flashlight.
HANDS-ON ELECTRONICS Jan 1987 (v.4#1) pg. 110

Electronic combination lock/alarm control. Est. cost: $45.
HANDS-ON ELECTRONICS Feb 1987 (v.4#2) pg. 38
Added Info HANDS-ON ELECTRONICS Jul 1987 (v.4#7) pg. 6

A no-frills closed-loop, hard-wired burglar alarm circuit.
HANDS-ON ELECTRONICS Mar 1987 (v.4#3) pg. 28

Build a smoke security alarm. Adapt your smoke detector to double as a security alarm.
HANDS-ON ELECTRONICS May 1987 (v.4#5) pg. 41

Burglar alarm circuit detects intrusions through a series loop of normally-closed switches.
HANDS-ON ELECTRONICS Feb 1988 (v.5#2) pg. 86

Simple burglar-alarm circuit is connected in a closed-loop to detect unauthorized entry.
HANDS-ON ELECTRONICS Mar 1988 (v.5#3) pg. 95

How to install a burglar-alarm system in your home. A look at perimeter-protection and interior-detection systems.
HANDY ANDY Jan 1978 (v.2#4) pg. 40

All about microwave burglar alarms.
HANDY ANDY Feb 1980 (v.4#5) pg. 12

Sophisticated security sensors. An overview of the various types of sensors (audio discriminators, foil, magnetic switches, microwaves, passive infrared detectors, and ultrasonics) and suitable applications.
HOME MECHANIX #757 Jul-Aug 1991 (v.87) pg. 12

Professional advice on installing a home alarm system. Includes tips on concealing alarm wires.
HOME MECHANIX #760 Nov 1991 (v.87) pg. 12

Troubleshooting false alarms in burglar-alarm systems.
HOME MECHANIX #762 Feb 1992 (v.88) pg. 30

Best burglar alarm brains. Advice on selecting and installing alarm system control panels.
HOME MECHANIX #764 Apr 1992 (v.88) pg. 32

Smart new DIY security systems. A comparison of new homeowner-installed system options versus professional security systems.
HOME MECHANIX #772 Feb 1993 (v.89) pg. 16

How to make home-alarm systems fail-safe. Tips on how burglars get around alarm systems.
HOME MECHANIX #780 Nov 1993 (v.89) pg. 12

Passive-infrared detectors. How they work and tips on choosing these intrusion alarm sensors.
HOME MECHANIX #789 Oct 1994 (v.90) pg. 26

A laser burglar alarm you can build. Uses Metrologic Instrument model ML-310 laser available assembled or in kit form. Use mirrors to direct a beam of laser light all around the perimeter of an area you wish to protect.
MECHANIX ILLUSTRATED #540 May 1973 (v.69) pg. 136

How to install a combination radio/intercom/burglar alarm system. Est. cost: $250.
MECHANIX ILLUSTRATED #546 Nov 1973 (v.69) pg. 130

A common sense guide to burglar and fire alarms. Tips on selecting a system for your home.
MECHANIX ILLUSTRATED #564 May 1975 (v.71) pg. 38

Traveler's burglar alarm. Spring-loaded clothespin with aluminum foil on the jaws is connected to a battery and a bell to make a simple alarm for use on a motel door.
MECHANIX ILLUSTRATED #615 Aug 1979 (v.75) pg. 88

How to install a total alarm system in your house. Wire all windows and doors.
MECHANIX ILLUSTRATED #624 May 1980 (v.76) pg. 48

Alarm for woman's purse will sound off if the handle of the purse is not held for about 30 seconds.
MODERN ELECTRONICS [1] Feb 1978 (v.1#1) pg. 16

Master circuit for a home alarm system that will handle both normally open and normally closed switches. There is a 30 second delay for turning the system on and off. Est. cost: Under $10.
MODERN ELECTRONICS [1] Feb 1978 (v.1#1) pg. 50

Totally passive intruder alarm measures the reflected light from any constant illumination source as it reflected off a black surface. Should the light level go up, an alarm is sounded. Est. cost: Under $9.
MODERN ELECTRONICS [1] Jul 1978 (v.1#5) pg. 55

Diagram of an alarm circuit for protecting doors and windows and featuring an outdoor alarm bell and master shutoff. LEDs indicate which door or window was breached.
MODERN ELECTRONICS [1] Sep 1978 (v.1#7) pg. 7

An experimental security alarm. The system is battery-powered and can identify which of up to 8 sensors (switches) has been triggered.
MODERN ELECTRONICS [2] May 1985 (v.1#8) pg. 63

Circuit for a versatile security alarm controller. System uses "area-of-value" concept and can be adapted to protect a home or car with no modification of the basic circuit.
MODERN ELECTRONICS [2] Jan 1986 (v.3#1) pg. 56

A 10-channel wireless home security system with a transmit/receive range of 150 feet. Est. cost: $70 receiver. $18 per transmitter.
MODERN ELECTRONICS [2] Nov 1986 (v.3#11) pg. 38

A personal security alarm. Battery-powered circuit sounds a buzzer when it detects intrusions for both inward- and outward-opening doors.
MODERN ELECTRONICS [2] Mar 1989 (v.6#3) pg. 45

Build a hard-wired home security alarm system. Includes an adjustable exit and entrance timer, a built-in loop test circuit, an optional 12-volt triggered output and a set of external relay contacts.
MOTHER EARTH NEWS #99 May-Jun 1986 pg. 118

A look at burglar alarm systems a homeowner can install.
NEW SHELTER Apr 1985 (v.6#4) pg. 70

How to install a wired burglar alarm system.
OLD-HOUSE JOURNAL Apr 1978 (v.6#4) pg. 40

Security measures. A buyer's guide to alarm systems and advice on what works best for old houses. Discusses both perimeter and interior hard-wired systems, wireless alarms and window bars and grilles.
OLD-HOUSE JOURNAL Jul-Aug 1996 (v.24#4) pg. 35

Burglar alarm uses ultrasonic sound waves which trigger the alarm when waves are disturbed.
POPULAR ELECTRONICS [1] Apr 1966 (v.24#4) pg. 41

Portable intrusion alarm emits a raucous, honking noise if tipped over. Est. cost: $2.
POPULAR ELECTRONICS [1] Jul 1966 (v.25#1) pg. 50

Intercom doubles as a burglar or fire alarm.
POPULAR ELECTRONICS [1] Oct 1966 (v.25#4) pg. 97

Solid-state photocell alarm system uses a beam of light around the perimeter of a room to detect intruders.
POPULAR ELECTRONICS [1] May 1968 (v.28#5) pg. 41

Alarm system can protect your whole house from fire or burglars. Estimated cost of alarm mechanism: $15 plus cost of switches and housewide wiring.
POPULAR ELECTRONICS [1] Nov 1968 (v.29#5) pg. 47
Added Info POPULAR ELECTRONICS [1] Feb 1969 (v.30#2) pg. 117

Professional type burglar alarm uses switches on doors and windows and conductive tape on glass. Est. cost: $40 up.
POPULAR ELECTRONICS [1] Oct 1969 (v.31#4) pg. 71

"Foolproof" burglar alarm circuit.
POPULAR ELECTRONICS [1] Mar 1970 (v.32#3) pg. 97

Circuit for use in make-break intrusion alarm.
POPULAR ELECTRONICS [1] Sep 1971 (v.35#3) pg. 89

Self-powered solid-state intruder/fire alarm has features of a commercial system.
POPULAR ELECTRONICS [1] Dec 1971 (v.35#6) pg. 61

Infrared intrusion alarm uses a tone-modulated beam and has standby battery power. Est. cost: $24.
POPULAR ELECTRONICS [1] Mar 1972 (v.1#3) pg. 51

Electronic security systems. Protect your home with one of these commercial alarms.
POPULAR ELECTRONICS [1] Sep 1972 (v.2#3) pg. 28

Low-cost apartment burglar alarm is self powered and features an adjustable time delay. Uses sliding metal sensors to cover the single door and one or two windows that are ususally vulnerable in an upstairs apartment.
POPULAR ELECTRONICS [1] Jul 1976 (v.10#1) pg. 50
Added Info POPULAR ELECTRONICS [1] Mar 1977 (v.11#3) pg. 6

Circuit for a burglar alarm which uses sensors in parallel. Unit is powered by a battery. Fail safe modification is also shown.
POPULAR ELECTRONICS [1] Jul 1978 (v.14#1) pg. 75

Circuit for a combination fire and burglar alarm.
POPULAR ELECTRONICS [1] Sep 1978 (v.14#3) pg. 87

Two electronic systems to protect you and your property that you can build. (1) An infrared intrusion alarm will protect up to 50 feet between transmitter and receiver. Has a built in circuit to avoid being fooled by other IR sources. (2) A portable battery-powered alarm is triggered whenever someone touches a doorknob. The alarm simply hangs on the inside doorknob.
POPULAR ELECTRONICS [1] Dec 1978 (v.14#6) pg. 66
Correction POPULAR ELECTRONICS [1] Jan 1979 (v.15#1) pg. 8

Circuits for missing-pulse detectors and slot switches use 555 and 556 ICs. Such circuits may be found in intrusion alarms and adjustable-duration event timers.
POPULAR ELECTRONICS [1] Sep 1979 (v.16#3) pg. 89

Circuit for an alarm switch to protect a tool box or other applicatons.
POPULAR ELECTRONICS [1] Apr 1982 (v.20#4) pg. 87

Circuit for a simple burglar alarm.
POPULAR ELECTRONICS [1] Apr 1982 (v.20#4) pg. 88

A new, effective anti-burglary system. Wireless theft-prevention system sounds an alarm before a burglar enters your house. Est. cost: $200.
POPULAR ELECTRONICS [1] Jun 1982 (v.20#6) pg. 49
Correction POPULAR ELECTRONICS [1] Oct 1982 (v.20#10) pg. 9
Added Info COMPUTERS & ELECTRONICS Mar 1983 (v.21#3) pg. 7

Burglar alarm circuit is built around a 555 oscillator/timer configured for monostable operation. Works with normally-open switches.
POPULAR ELECTRONICS [2] Aug 1989 (v.6#8) pg. 22

Servicing security systems. Learn how to track down even the most elusive problems and end false alarms in hard-wired (perimeter) alarm systems.
POPULAR ELECTRONICS [2] Sep 1989 (v.6#9) pg. 69
Added Info POPULAR ELECTRONICS [2] Jan 1990 (v.7#1) pg. 4

Automated entry alarm circuit features a sensor that detects changes in ambient light and/or motion.
POPULAR ELECTRONICS [2] Feb 1990 (v.7#2) pg. 27

Instrument alarm circuit utilizes a tilt switch and a buzzer to detect unauthorized movement of expensive electronic test equipment.
POPULAR ELECTRONICS [2] Feb 1990 (v.7#2) pg. 28

Versatile Code Alarm features separate adjustable enter and exit delays and automatic alarm reset. Use a 1-digit code to arm and 4-digit code (or a key) to disarm. Includes a tamper circuit. Suitable for automobile, home, boat, etc. Est. cost: $30.
POPULAR ELECTRONICS [2] Apr 1990 (v.7#4) pg. 39
Correction POPULAR ELECTRONICS [2] Jun 1990 (v.7#6) pg. 4

Burglar alarm circuit is triggered by any sensing device that closes its contacts when activated.
POPULAR ELECTRONICS [2] Aug 1990 (v.7#8) pg. 27

Small, simple burglar alarm circuit drives a loud buzzer when either of its two zones are triggered.
POPULAR ELECTRONICS [2] Dec 1990 (v.7#12) pg. 41

Alarm circuit modification causes an LED to blink until the broken loop is reestablished.
POPULAR ELECTRONICS [2] Jan 1991 (v.8#1) pg. 28

Alarm-control circuit provides an entry delay, exit delay, and latching action.
POPULAR ELECTRONICS [2] Apr 1991 (v.8#4) pg. 23

Alarm circuit will alert you when someone opens any door or window that you wish to monitor.
POPULAR ELECTRONICS [2] Apr 1991 (v.8#4) pg. 25

Simple circuit called a delay-off relay timer. A charged capacitor keeps a relay latched. This can provide an exit delay for an alarm system.
POPULAR ELECTRONICS [2] May 1991 (v.8#5) pg. 86

Alarm circuits. (1) Silent alarm remembers a breech. A removable LED is used to read-out the alarm status. (2) Closed loop circuit uses a string of series-connected normally-closed switches. (3) Parallel-loop circuit. (4) Combination series/parallel circuit. (5) High-power driver circuit. (6) Multi-loop parallel circuit.
POPULAR ELECTRONICS [2] Jan 1992 (v.9#1) pg. 78

Alarm/sounder circuits. (1) Closed-loop detection circuit with a delay feature. (2) Circuit with a 555 oscillator/timer IC that serves both alarm-trigger and entry-delay functions. (3) Low-level sounder won't warn off intruder in another location. (4) Dual-tone sounder. (5) Alternate sensor uses light to detect an intruder.
POPULAR ELECTRONICS [2] Feb 1992 (v.9#2) pg. 65

More intruder-detector circuits. (1) Exit delay. (2) Light-dependent sensor. (3) Bridging touch-plate sensor. (4) Single-plate touch sensor.
POPULAR ELECTRONICS [2] Aug 1992 (v.9#8) pg. 72

Simple intrusion-indicator circuits use LED's, resistor and battery.
POPULAR ELECTRONICS [2] Oct 1992 (v.9#10) pg. 74, 88

Alarm actuator circuit which also protects the wiring to the sensors.
POPULAR ELECTRONICS [2] Nov 1992 (v.9#11) pg. 76, 91

Motion-detecting alarm circuits. (1) Add a buzzer to a passive-infrared exterior light that sounds when the light is activated. (2) Changes in ambient light are used to latch a variety of DC loads. (3) Infrared transmitter and receiver to monitor a passageway.
POPULAR ELECTRONICS [2] Aug 1994 (v.11#8) pg. 24
Added Info POPULAR ELECTRONICS [2] Feb 1995 (v.12#2) pg. 30

Build a full-featured commercial-quality burglar-alarm system to protect your home. This microprocessor-controlled system features eight individual protection zones, adjustable entry/exit delays, panic switches, X-10 compatibility, etc. Est. cost: $150 (kit).
POPULAR ELECTRONICS [2] Oct 1994 (v.11#10) pg. 31

Alarm circuit contains some excellent features, including a panic switch and adjustable siren. An improved version of an April 1991 circuit.
POPULAR ELECTRONICS [2] Sep 1996 (v.13#9) pg. 66
Correction POPULAR ELECTRONICS [2] Dec 1996 (v.13#12) pg. 6

Sentinel. Build this early-warning addition to your existing telephone-dependent home alarm system. This device monitors the telephone line and sounds an alarm should the line go dead.
POPULAR ELECTRONICS [2] Feb 1999 (v.16#2) pg. 45

Phone-A-Larm. A unique device which will raise a telephone receiver and dial a preset number. The phone will be allowed to ring three times and then the connection is broken by replacing the receiver. The same cycle is repeated every 60 seconds. Useful as a burglar alarm using existing telephone lines. Est. cost: $50.
POPULAR MECHANICS Dec 1966 (v.126#6) pg. 174

How to install an electronic fire-theft system for the house. Installation uses a $130 kit.
POPULAR MECHANICS Nov 1970 (v.134#5) pg. 160

New ways to keep thieves out of your home. A review of various alarm systems available.
POPULAR MECHANICS Apr 1981 (v.155#4) pg. 149

Design and install your own burglar alarm system.
POPULAR MECHANICS Dec 1983 (v.160#6) pg. 66

Troubleshooting a home alarm system.
POPULAR MECHANICS Apr 1984 (v.161#4) pg. 149

Electric eye can serve as burglar alarm and automatic doorbell. Est. cost: $10.
POPULAR SCIENCE Sep 1965 (v.187#3) pg. 100

How to protect your valuables from burglary. Review of several inexpensive alarm systems.
POPULAR SCIENCE Sep 1967 (v.191#3) pg. 80

Electronic burglar alarm system sounds whenever the circuit is broken or shorted. A variety of switches and detection devices may be included in the same circuit. Powered by a 1.5 volt battery and a 6-volt battery.
POPULAR SCIENCE Jul 1968 (v.193#1) pg. 98

Small, portable, battery-powered intrusion alarm goes off if if is knocked over by a door opening against it.
POPULAR SCIENCE Nov 1969 (v.195#5) pg. 182

How electronics can guard your home. Various syles of switches, plus the control box to form a home alarm system.
POPULAR SCIENCE Jan 1971 (v.198#1) pg. 92

Campground intrusion alarm. Portable unit can protect your campsite by surrounding it with easily broken 32-gauge copper wire.
POPULAR SCIENCE Apr 1971 (v.198#4) pg. 114

Master home security "dualarm" monitors 10 sensors and indicates the sensor and type of signal (intruder or fire) by means of illuminated panel lights.
POPULAR SCIENCE Oct 1972 (v.201#4) pg. 110

How to construct a laser alarm system to protect your entire house. Uses a laser from Edmund Scientific and a photoelectric eye from Radio Shack in conjunction with standard car or bicycle mirrors.
POPULAR SCIENCE Dec 1974 (v.205#6) pg. 102

Easy-to-install wireless security systems. What is available and tips on their installation.
POPULAR SCIENCE Nov 1984 (v.225#5) pg. 98

Build this electronic security system. Features test light, exit time delay, accessory control, entrance time delay, day-night circuit, automatic alarm turn-off, stand-by power and provision for fire sensors and panic button. Est. cost: $65.
RADIO-ELECTRONICS Sep 1977 (v.48#9) pg. 36

Build autodialer and cassette interface. Pulses recorded on tape will dial a selected phone number and then play a pre-recorded message. Use it as part of a fire alarm or burglar alarm system.
RADIO-ELECTRONICS May 1978 (v.49#5) pg. 41
Correction RADIO-ELECTRONICS Sep 1978 (v.49#9) pg. 22

Burglar alarm switches made easy. Make inexpensive magnetic intruder switches by encasing tiny magnetic reed switches in plastic housings from ball point pens.
RADIO-ELECTRONICS Jul 1978 (v.49#7) pg. 41

Build this electronic security alarm that features both open- and closed-loop detector wiring. Powered by a 12-volt lantern battery. CMOS integrated circuit assures a long battery life by turning off alarm after a predetermined period from 1 to 15 minutes. Est. cost: $30.
RADIO-ELECTRONICS Oct 1978 (v.49#10) pg. 41

Burglar alarm system monitors switches on doors and windows. Has built in time delay to allow homeowner to turn off the device. Circuit sounds an alarm and can be attached to an automatic dialer.
RADIO-ELECTRONICS Apr 1979 (v.50#4) pg. 40

Entryway monitor. An electronic "watchdog" circuit or annunciator can operate either in audible or silent mode to tell you if anyone has entered your home.
RADIO-ELECTRONICS Mar 1985 (v.56#3) pg. 105

Build this phony burglar alarm. Electronic "scarecrow" makes your house appear to be protected by a sophisticated alarm system. This dummy "alarm-status display" flashes red and green LED's. Est. cost: $20.
RADIO-ELECTRONICS Sep 1986 (v.57#9) pg. 44

Electronic security systems. A historical review of alarm systems and a look at the current state of the art.
RADIO-ELECTRONICS Apr 1988 (v.59#4) pg. 59

How to install a professional-quality home security system yourself. Looks at both wired and wireless intruder systems designed to protect all openings.
RADIO-ELECTRONICS Apr 1989 (v.60#4) pg. 42

Build a wireless security system that monitors an area using invisible infrared beam and beeps a hand-held buzzer when a problem is detected.
RADIO-ELECTRONICS Apr 1989 (v.60#4) pg. 47, 69

Programmable phasor property guard. Scare criminals away with an unbearable ear-piercing sound. A high-pressure ultrasonic sound is triggered when an unauthorized intrusion is detected.
RADIO-ELECTRONICS Dec 1989 (v.60#12) pg. 37, 79

Home-security cookbook. Part 1. An introduction to modern home-security alarm systems. Typical circuits for fire, burglar and panic alarms. Placement of sensors and controls also covered.
RADIO-ELECTRONICS May 1990 (v.61#5) pg. 61

Home-security cookbook. Part 2. Sirens and various types of "fault-indicator" alarms.
RADIO-ELECTRONICS Jul 1990 (v.61#7) pg. 56

Simple battery backup can be used to power a control circuit for an alarm system.
RADIO-ELECTRONICS Dec 1990 (v.61#12) pg. 8

Build your own Cyclops, a light intensity monitor that can be used as an intrusion detector or as part of an electronic rifle range. Printed circuit board template included.
SCIENCE & MECHANICS Fall 1979 pg. 74

Results of a test of fourteen do-it-yourself burglar alarm systems.
WOMAN'S DAY Jun 26 1979 (v.42#11) pg. 48

Simple door burglar alarm system that doubles as a doorbell. Use either battery or house current as the power source.
WORKBENCH Sep-Oct 1966 (v.22#5) pg. 22
Added Info WORKBENCH Jul-Aug 1967 (v.23#4) pg. 13

Simple measures for better home security. Includes instructions for building an intrusion alarm.
WORKBENCH Mar-Apr 1970 (v.26#2) pg. 27

Protect your home by installing an alarm system. Tips on selecting the system and installing the switches and wiring.
WORKBENCH Sep-Oct 1982 (v.38#5) pg. 58

Install your own security system with do-it-yourself components.
WORKBENCH Jul-Aug 1984 (v.40#4) pg. 36

How to install a wireless home security system.
WORKBENCH Apr-May 1996 (v.52#2) pg. 36