DARK SENSITIVE SWITCH

Dark Sensitive switch project based on single BC547 transistor, Relay operates when light that falls on the LDR, goes below a set point. It’s very simple and low cost dark sensitive switch required few components.

FEATURES

• Input : 12 VDC @ 55 mA
•  Relay output : NC – C – NO
•  Onboard preset to set the level
•  Power-On LED indicator
•  Relay On LED indicator
•  Screw terminal connector for easy relay output connection
•  Four mounting holes of 3.2 mm each
•  PCB dimensions 44 mm x 40 mm

SCHEMATIC

PARTS