Bed Exit Sensor
The Version 4 BX234 Sensor is especially designed to operate with the new range of graduated firmness mattresses.
As the sensor is under the mattress or in the mattress under at least the top layer of foam, there is no discomfort to the person in bed. Most of the new graduated foam mattresses have a zipper opening and 2 or more layers of different density foam, heave at the bottom and less dense at the top.