The PYROSB is a metal arm with adjustable length (14.7″ – 23.6″) for the PYROself snow sensor and control system. Fits precisely to the round surface and the holes are located on the metal ring secure the snow sensor assembly. Adjusting the arm length is easy and done using the top screw. The rectangular holes along the arm provide easy holding point for wire ties, securing the cable of the PYROSB. An opening in the wall plate provides a direct access to feed the wire into the house.