Multi step switch 1-pole without off, 3 steps
https://www.teconex.eu/shop/m20smast31sa-multi-step-switch-1-pole-without-off-3-steps-48300
https://www.teconex.eu/web/image/product.template/48300/image_1920?unique=9d7a924
Interne referentie: M20SMAST31SA
