Infrared alarm barrier circuit

Published:2012/10/11 21:13:00 Author:muriel | Keyword: Infrared, alarm barrier | From:SeekIC

This infrared alarm barrier can be used to detect persons passing through doorways, corridors and small gates. The transmitter emits a beam of infrared light which is invisible to the human eye. The buzzer at the output of the receiver is activated when the light beam is interrupted by a person passing through it. Infrared Light Alarm Transmitter Circuit Schematic Infrared Alarm Barrier Receiver Circuit Schematic



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