Use ancilla in a sentence. an aid for use as in understanding or accomplishing something; often, specif., a handbook, or manual. Origin of ancilla. see ancillary.
Making the world better, one answer at a time. The accelerometer in mobiles is used to measure the orientation or vertical and horizontal positioning of the phone. The most basic application of this is the device knowing when to alternate the view of the screen depending on how you are holding it.
Occupancy and Vacancy Sensors. Leviton offers a wide selection of occupancy and vacancy sensors, commonly referred to as motion sensors or motion light sensors for commercial and residential applications. These state-of-the-art devices use passive infrared, ultrasonic or a combined multi-sensing technology.