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: 46355
author: Thomas Scarborough
visits: 32700
author: smartkit
visits: 32634
author: RED Free Circuit Designs
visits: 31798
author: Motorola
visits: 29927
author: smartkit
visits: 27239
author: RED Free Circuit Designs
visits: 26052
|
Audio
