respuesta aportada el 01/06/2016 :
In order to extend the 10hours batteries autonomy, Chauvin Arnoux deleveloped a new accessory for the QualistarPlus. The PA31ER adapter is directly connected on the voltage inputs of the QualistarPlus, and allow you to supply the device as long as there is a voltage. The batteries will be able to take over in case of power cut. It accepts every voltages that can measure the QualistarPlus, 1000Volts AC and DC.
You will find more information on this accessory by downloading the User's Manuam through the link below :
http://www.chauvin-arnoux.com/sites/default/files/download/NF_PA31ER_5L_694837A00.pdf
