I have just bought the above baby monitor for our pending arrival. On the bottom of the camera unit, there are 2 holes for it to be screw mounted (the tear shaped holes that you slide screw heads into). Can I mount this unit to the wall above the cot? Would it put too much pressure on the pan and tilt mechanism? Are these screw holes there for it to be screw mounted to a shelf or another horizontal, flat surface? Any advice would be appreciated as there is nothing in the instructions about these holes.