Security and Alarm Circuits (01)

Circuit Collection: Alarm, Sensors, Detector, Proximity, Door, Lock, Codelock, Moisture, Fridge Ultrasonic system, Toxic Gas, Water, Temperature, Silent Alarm, PIR, Motion detector, Frost, Emergency, Combination lock, Eddy current, Home, Security, Burglar Alarm, Water Activated, Water level, Perimeter monitor, Surveillance

About Project Links

• Proximity alarm
• Electronic lock
• Electronic door codelock (PIC16F84)
• Moisture alarm
• Fridge door alarm
• Ultrasonic remote control & alarm system
• Wire loop alarm
• Digital entry lock
• Proximity switch
• Toxic Gas Detector
• Door knob alarm (PDF)
• Water seepage alarm (PDF)
• Micro-power over temperature alarm (PDF)
• Personal silent alarm system
• Active IR motion detector
• Frost alarm
• Ultrasonic radar alarm
• Refrigerator door alarm
• Emergency Light & Alarm
• Electronic combination lock
• Proximity detector for humans / living creatures using eddy current detection
• A Basic RF Transmitter for PIR Sensors
• PIR motion detector
• Simple alarm system
• Home security project
• 5 Zone alarm circuit
• Miniature loop alarm
• Novel Buzzer
• Gate alarm circuit
• Modular Burglar Alarm
• Motorcycle alarm
• Enhanced 5 Digit Alarm Keypad