Transolid SA9030HDALWH Sensio HD LED Battery Operated Utility Light, Aluminum, Cool White Requires 4 x AAA batteries to run (not included) Integrated Sensor built-in (located in the center of the unit) Two functions of this light: 1. Use as a drawer/in-cabinet light (the light switches on with the opening of a drawer/door) 2. Use as an under unit light (the light switches on/off when a hand passes the sensor) If used for an average of 3 minutes per day, the batteries in the unit will last approximately 1.5 years 2" (50mm) IR sensor detection range