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: 46192
author: smartkit
visits: 32447
author: Thomas Scarborough
visits: 32392
author: RED Free Circuit Designs
visits: 31546
author: Motorola
visits: 29616
author: smartkit
visits: 27076
author: RED Free Circuit Designs
visits: 25926
|
Audio
