This circuit is Night Switch with Timer off circuit board which you can set the time 1 to 12 hours to turn off switch after sensor detect the dark .

Technical information:
- Power Supply 12 VDC
- Current Consumption 50mA Max.
- One Relay to control any electricity.
- 6 LED to show setting time.
- Delay on 5 seconds.
- Delay off when sensor detect the light 5 seconds.
- 10A / 110VAC and 7A / 220VAC
- POT to adjust the sensitivity of light
- PCB size 2.76" x 2.15"

Example :  You need the lamp to turn on only 5 hours after night time, after 5 hours , lamp will be turn off automatic. You can adjust the sensitivity of light to match with the time before night.

Download User Manual