Kemo B045 Light Barrier 12v
This useful project kit operates a relay switch depending on changes in the ambient light level.
- The circuit uses an operational amplifier, used as comparator
- Can be used as a light activated alarm sensor
- Relay switch operates if light from a lamp, door, window, etc., is interrupted by a person's shadow
- May also be used as twilight switch, automatically operating lamps, etc., at dusk
- Kemo type B045
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