I contacted customer service to be certain this item had a light sensor, the reply was a definite yes so I ordered it and it arrived promptly. To my dismay it has a timer, not a sensor.

They are holding up well; purchased a year ago. Not as bright as electric but love not having cords everywhere and they do not get as hot as electric.

Not bad for plastic candles; nicely weighted base. But the picture shows a warm amber glow; in reality it is sort of blueish green. Going back.

They are working out, very well.