Magnetic Switch FBMC44B
https://simplehw.eu/shop/fbmc44b-magnetic-switch-fbmc44b-299
https://simplehw.eu/web/image/product.template/299/image_1920?unique=881d3ca
Surface mounted magnetic switch
Ideal for wooden door/window
Color: white (others available for field deployment)
Gap: 15-25mm,20-25mm
