Photo controller has independent outlets for day and night operation. An internal photo-sensor will initialize  the associated outlets determined by light or darkness conditions.
Plug your day power appliances into the white outlets and your night power devices into the black outlets
Suitable for fans, pumps, or any other small 120 volt appliances. Do not exceed 15 amps total
NOTE: Relay may chatter for a millisecond while switching. This is normal.