The 160 movement sensor IP44 1200W 12m max is a new type of energy saving motion senor lamp; it adopts PIR technology to sense motion and turn on the light automatically; it is an automatic lamp which will be on when one comes and automatically off after leaves. If you want the light to remain on for an extnded period pf time, just slide the switch to the ON setting to turn the light on and keep it on, until you turn the switch off.