Infrared IR Alarms Circuits & Projects (8)

Browse through a total of 8 infrared alarms.

infrared beam break detector circuit

Infrared Beam Break Detector

P. Marian - 07/25/2013

Application An infrared detector that sounds a buzzer when an IR beam is broken, meaning the IR signal [...]
infrared invisible alarm circuit

Invisible Infrared Alarm Circuit

D Mohankumar - 12/01/2010

This circuit uses invisible infrared light to detect the movement of people through the door. A short beep [...]

Photodiode Alarm Circuit

D Mohankumar - 10/14/2010

This Photodiode based Alarm can be used to give a warning alarm when someone passes through a protected [...]
IR beam breaker circuit

IR Beam Breaker Circuit

D Mohankumar - 08/28/2010

This is an IR beam breaking alarm ideal to use in entry or passages. It is based on [...]

Electronic GateKeeper Circuit

D Mohankumar - 08/15/2010

This circuit can do the job of a Gatekeeper and intimates you if someone passes through the gate. [...]
motion detector alarm circuit

Motion Detector Alarm Circuit

D Mohankumar - 03/23/2010

This motion detector alarm can detect a moving person from a distance of 1 meter. It uses a [...]
burglar alarm system circuit schematic

Burglar Alarm System Circuit

P. Marian - 04/10/2009

This burglar alarm system circuit is using a infrared proximity detector that triggers an alarm when the rays [...]

Infrared Alarm Barrier Circuit

Received by Email - 12/07/2008

This infrared alarm barrier can be used to detect persons passing through doorways, corridors and small gates. The [...]
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