The new battery sanders RTSC 400, DTSC 400, ETSC 125 provide outstanding mobility in work. The powerful 18 V Bluetooth® Ergo battery with 3.0 Ah delivers the same performance as corded and gives the 1.4 kg lightweight machine a well-balanced weight distribution and unmatched ergonomics. The built-in dust extraction system combined with the Longlife dust bag makes the machine easy to handle, allowing easy work above head or in hard-to-reach places. With the Bluetooth® battery in combination with a Bluetooth® compatible Festool dust extractor in AUTO mode, the dust extractor starts automatically when you start the sander. For unlimited operating time, you can replace the battery with a plug-it power adapter – perfect for stationary use and in combination with a Festool dust extractor.