Suitable for regolating ceiling and extractor fans with induction motors with auxiliary phase. Direct control with two way push button switch and regulation by rotating button. When regulation level is set, push button to turn off, push again to switch on at regulation level already set (Fig. 1-2). It permits replacement of traditional wall regulators equipped with autotransformer and commutator switch 4/5 positions. Does not produce additional noise if used for speed of window or wall fans. If used with ceiling fans, a slight noise is heard. For domestic use, bedrooms for example, we advise to use RMIR234P.. or RMUN, which don’t produce any extra buzzing. When using two way fans or extractor fans use connection diagrams as shown in Fig. 3 and 4. If fan has open grill automatic control, connect command conductor in front of dimmer (wire C). Protect device with fuse F0,8 AH / 250V in with circuit.