Multi step switch 1-pole without off, 4 steps
https://www.teconex.eu/shop/m20smast41sa-multi-step-switch-1-pole-without-off-4-steps-48304
https://www.teconex.eu/web/image/product.template/48304/image_1920?unique=9d7a924
Interne referentie: M20SMAST41SA
