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Kemo B045 Light Barrier 12v

Order Code:  

70-1402

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Brand: Kemo MPN: B045 EAN-13: 4024028010458
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1+ £6.24

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104 at factory, lead time 9 days
Out of Stock104 lead time 9 days

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
Operating voltage12V DC
Current consumption<100mA
Relay contact1 x ON max. 3 A max. 25 V
SensitivityAdjustable
Light wavelengthVisible light only
Size of board55.6 x 26.7mm

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