The SleepSense Piezo Limb Movement Sensor (#1771) is strategically strapped to the foot to monitor limb movements. This sensor produces output from strong movement, but also even when there are minute movements of a single toe. It is equipped with a key connector and is also available in a kit (#1771-Kit). Warranty: 1 Year - Free of Defects in Materials and Quality Workmanship. The Piezo Limb Movement Sensor is compatible and commonly used with the Natus Embla S4500 and N7000 PSG systems. SleepSense sleep-lab sensors are intended for use on children and adult patients who are screened during sleep disorder studies at a sleep laboratory or the patient's home. Note: SleepSense items are for professional use only, and are for sale by or on the order of a physician only. Specifications SleepSense Piezo Limb Movement Sensor Specifications Operating Conditions: 40 to 104 °F (5 to 40 °C). Storage Temperature: -4 to 140 °F (-20 to 60 °C). Operating and Storage Humidity: 5 to 95% (non-condensing). Literature SleepSense Piezo Limb Movement Sensor Literature SleepSense Additional Info Regarding Cleaning Agents SleepSense Limb Movement Sensors User Manual