A point-of-purchase display having a display board with a front surface and a rear surface. The phone entry systems only communication connection port is a standard telephone line jack. Moreover, in a vibrational component in the valve member reciprocating direction of the valve members, amplitude of the vibration can be decreased by a damping force generated in the damper chamber. So configured, the valves include simple cartridge-type devices that are easily installed into and removed from the manifold. In one illustrative embodiment, a device is provided for delivering and deploying an anchor, plug, filament, and locking element adjacent to the opening in the vessel wall andor tissue tract. Each absorber module further includes its own fluid circuit in which a fluid to be heated by the solar flux can flow, the fluid circuits of the absorber modules being connected to one another.