Sensors & control - all subcategories
This circuit emits a beep and/or illuminates a LED when someone touches the door-handle from outside. The alarm will sound until the circuit will be switched-off.
author: RED Free Circuit Designs
visits: 48684
author: Thomas Scarborough
visits: 36348
author: smartkit
visits: 34821
author: RED Free Circuit Designs
visits: 34675
author: Motorola
visits: 32858
author: smartkit
visits: 29246
author: RED Free Circuit Designs
visits: 28093
author: Andy Collinson
visits: 24767
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