When using for an infant not yet able to crawl, place one sensor pad (as shown in the illustration below). Please make sure the sensor isplaced underneath the baby's location in the crib.
When baby begins to crawl, and is able to move onto areas not covered by a single sensor pad, attach the second sensor pad and place the two sensor pads as shown in the illustration below.
Note; The sensors should be placed with the marking "THIS SIDE UP" facing upfront