The new RTSC 400, DTSC 400 and ETSC 125 compact battery sanders guarantee extraordinary mobility and freedom of movement during work. The powerful 18 V Ergo battery with Bluetooth® and 3.1 Ah guarantees the same power as the power grid. And it is the key to an extremely compact design with a balanced weight distribution and perfect ergonomics with only 1.4 kg of weight. The integral suction system, in combination with the Longlife collection bag, allows flexible operation of the machine, without fatigue, even when working above the head, vertically or in hard to reach places. The Bluetooth® battery makes the job easier when combined with a Bluetooth® compatible Festool vacuum cleaner so that, when operating in AUTO mode, the vacuum cleaner starts automatically when the battery sander is turned on. To obtain unlimited autonomy, the battery can be replaced by the plug - it network adapter, ideal for stationary applications and in combination with a mobile Festool suction system. Portable and fatigue - free: without mains cable or flexible tube, with perfect ergonomics, reduced height and only 1.4 kg in weight Powerful: the 18 V Ergo battery, in combination with the EC - TEC brushless motor, provides the same power as a connection to the mains No interruptions, thanks to batteries with a capacity of 3.1 Ah, which have a longer operating time than charging Unlimited autonomy: for a permanent power supply, the battery can be replaced by the plug it network adapter (included in the set and available as an accessory) Powder - free and healthy: with the Longlife polyester fleece bag extraduradero or in combination with a mobile Festool suction system Less touch - ups: PROTECTOR for non - aggressive sanding of window surfaces, frames and panels Comfortable aspiration: the battery communicates via Bluetooth® with the Bluetooth® module of the CLEANTEC vacuum cleaner (in CT 26/36/48 it can be incorporated as an accessory; in CT MINI I and MIDI I it comes standard) and starts the vacuum cleaner automatically when turning on the battery sander