Dark Sensitive Switch

Rajkumar Sharma      http://www.rajkumarsharma.com  

357 

photo (1)

Description

Dark Sensitive Switch is a simple project which operates a relay when the light falling on the LDR goes below a set point.

  • Input – 12 V @ 55 mA
  • Relay output – NC-C-NO
  • Onboard preset to set the level
  • Power-On LED indicator
  • Relay On LED indicator
  • Power Battery Terminal (PBT) for easy relay output connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 44 mm x 49 mm

Schematic

schematic (1)

Parts

parts

PCB

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