Using solid-state accelerometers, this SleepSense Body Position Sensor provides a signal that is directly proportional to the patients sleeping posture (supine, prone, left, right or sitting). The sensor may be connected to suitable high level channels on the recorder. SleepSense Body Position Sensors are designed with an improved body attachment ensuring alignment of the sensor and body axis. The #1571 SleepSense Body Position Sensor is designed with a key connector, suitable for most systems that accept key connectors.