The new battery sanders RTSC 400, DTSC 400, ETSC 125 offer outstanding mobility in work. The powerful 18 V Ergo battery with 3.1 Ah provides the same performance as corded, giving the 1.4 kg lightweight machine unmatched ergonomics. The integrated dust extraction combined with the Longlife dust bag makes the machine easy to handle, allowing you to work overhead or in hard-to-reach places effortlessly. To achieve completely unlimited operating time, you can replace the battery with a plug it mains adapter. Mobile and convenient: cord-free and hose-free, with perfect ergonomics, low height, and a weight of just 1.4 kg. Performance like corded and maintenance-free with a brushless EC-TEC motor. No interruptions: with the 3.1 Ah battery that works longer than it needs to charge. The same machine in both the workshop and out on the job site - with the mains adapter, you choose whether to work with battery or cord.. Dust-free and health-friendly: with the Longlife dust bag made of extra durable polyester fabric or in combination with a Festool vacuum cleaner. Minimal reworking: PROTECTOR for gentle sanding along window edges, frames, and door panels. Sand without a cord where outlets are missing or where access is difficult (e.g., outdoors, on scaffolding). Work mobile if you find that the power cord and suction hose are in the way (e.g., on vertical surfaces, overhead, when trimming edges…). Ideal for vertical surfaces or work above head height. One-handed sanding for small and narrow areas. Sand paint and varnish on window frames, door frames, and ceiling moldings. With the plug it mains adapter, it becomes a sander with unlimited operating time in continuous electric operation – perfect in combination with a Festool vacuum cleaner indoors. Systainer SYS3 M 187