Sensors & control - other
author: Thomas Scarborough
visits: 760
author: smartkit
visits: 467
author: RED Free Circuit Designs
visits: 362
author: Paul Stilo
visits: 266
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: 262
author: Jonathan Filippi
visits: 255
author: RED Free Circuit Designs
visits: 254
|