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: 32909
author: smartkit
visits: 23444
author: Thomas Scarborough
visits: 21895
author: Motorola
visits: 21502
author: RED Free Circuit Designs
visits: 20153
author: smartkit
visits: 19752
author: RED Free Circuit Designs
visits: 19135
|
Audio
