Ah, I got the wrong ones
Those on/off ones are better than nothing as they allow the lights to be on at the same time of day and for the same length of time every day. But the room should be lit for an hour before the lights turn on and an hour after the lights turn off, either daylight or electric light.
Those on/off ones are better than nothing as they allow the lights to be on at the same time of day and for the same length of time every day. But the room should be lit for an hour before the lights turn on and an hour after the lights turn off, either daylight or electric light.