This circuit is Emergency Light System, when your electricity in your home is down, this board will automatic turn on the light ( 12VDC ), and turn off the light when the electricity is up again. You have to prepare backup battery 12VDC, 3A to 7A ( recharge ). and 15VAC transformer at least 1A to supply to this board and use for automatic charge to the battery.

 Technical information:

- Need Battery backup 12DV 3A to 7A.

- Max load 50W at 12VDC, ( back up  time approx 90minutes )

- TEST switch for operation testing.

- Including LDR to detect the light. ( to know night or day )

- Charger circuit built-in and automatic cut off the load when battery drop below 9VDC. 

- Comes with the schematic and how to connect by image ,easy to understand.

- Example : Use in your home / Garage / Bed room

Download User Manual