How long do you want to run these cables? horizontally or vertically? When I am supposed to install an external motion sensor (e.g. RK315) on a wall insulated with polystyrene, I release the cable from the soffit so that it hangs loosely where the detector is to be (at a height of 1.4 - 1.5 m, I insert a thin installation pipe, slightly pointed and push it up The pipe driven under the angle will reach the wall and slightly "wrap" on it going up. If you push the right size, it will come out at the top of the façade under the soffit. Then I let the cable in and it's ready. You can also fight with a stiff 3mm wire -stalowy.technician, colleagues will add a lot of the rest.
