Great Emergency

I use 2 Nightlux as safety light on a staircase (one each above and below). The install is a breeze. Just attach the supplied magnetic disc on the wall and it stuck the light. The lights look like flush lamps. The brightness is sufficient to safely commit my steps to ensure in the dark. The lights start about 1 m before entering the first stage to shine. The burn time can be set (in my 10s). The light goes out but only when no motion is detected. All in all a great solution if you have no fixed power supply on hand.