Abstract: A protective device for housing utility equipment is tamper-resistant and allows easy access to the equipment for maintenance. A slidable mounting unit is normally stored and operative inside the durable main body in an in-use position, but may be lifted up, with the utility equipment attached, from the main body for access to the equipment. The mounting unit is locked inside the main body by a lock that is difficult to access with any cutting or impact tools, to prevent or limit vandalism and opening of the system. The lock may be located in a space beneath the mounting unit and accessible through multiple small and narrow hand-holes that tend to allow only a person's hands, with a key or key-card, to reach the lock. A pivotal antenna/mast system may be included in a way that allows only an authorized user to lower the antenna/mast for maintenance.

Abstract: A linear impact switch provides a contact closure, when pressure-activated at any of multiple locations over substantial distances and surface areas. Preferred switch units are positioned with their impact faces in a generally vertical orientation to receive generally horizontal forces. The switch units may be used to trigger an alarm in a falling rock or slide area, wherein the switch units are placed beside a road, path, or other perimeter, for example, on a barrier, fence, retaining wall, or other structure. The switch units may be simple and durable, using a conductive outer (or forward) member and a conductive inner (or rearward) member, whereby the impact/pressure forces the outer/forward member to make contact with the inner/rearward member, thereby closing the switch to send or relay a signal notifying drivers or authorities of the event that caused the signal, even though the event may be in an isolated or seldom-inspected region.

Abstract: A protective device for housing utility equipment is tamper-resistant and allows easy access to the equipment for maintenance. A slidable mounting unit is normally stored and operative inside the durable main body in an in-use position, but may be lifted up, with the utility equipment attached, from the main body for access to the equipment. The mounting unit is locked inside the main body by a lock that is difficult to access with any cutting or impact tools, to prevent or limit vandalism and opening of the system. The lock may be located in a space beneath the mounting unit and accessible through multiple small and narrow hand-holes that tend to allow only a person's hands, with a key or key-card, to reach the lock. A pivotal antenna/mast system may be included in a way that allows only an authorized user to lower the antenna/mast for maintenance.