The new battery sanders RTSC 400, DTSC 400, ETSC 125 provide outstanding mobility in the workplace. The powerful 18 V Ergo battery with 3.1 Ah delivers the same performance as corded models and gives 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 comfortably overhead or in hard-to-reach places. To achieve completely unlimited operating time, you can replace the battery with a plug it mains adapter. Mobile and convenient: without cables and hoses, with perfect ergonomics, low height, and a weight of just 1.4 kg. Performance like corded models, and also maintenance-free with a brushless EC-TEC motor. Continuous operation: with the 3.1 Ah battery that works longer than it needs to be charged. The same machine can be used both in the workshop and on-site - with the mains adapter, you decide 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 surfaces, frames, and door panels. Sand without cables where power outlets are absent or difficult to access (e.g., outdoors, on scaffolding). Work mobile if you find the mains cable and suction hose in the way (e.g., on vertical surfaces, overhead, during edge sanding…). Ideal for vertical surfaces or for work above head height. One-handed sanding for small and narrow surfaces. Sand paint and lacquer on window frames, door frames, and ceiling moldings. With the plug it mains adapter, it becomes a sander with unlimited operating time in continuous electrical operation – perfect in combination with a Festool vacuum cleaner indoors. Systainer SYS3 M 187