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: 46475
author: Thomas Scarborough
visits: 32946
author: smartkit
visits: 32763
author: RED Free Circuit Designs
visits: 31966
author: Motorola
visits: 30116
author: smartkit
visits: 27401
author: RED Free Circuit Designs
visits: 26139
|
Audio
