The ornamental design for an emergencysignalingdevice, as shown and described.
FIG. 1 is a front perspective view of an emergency signaling device;
FIG. 2 is a front view of the design of FIG. 1;
FIG. 3 is a rear view of the design of FIG. 1;
FIG. 4 is a right side view of the design of FIG. 1;
FIG. 5 is a left side view of the design of FIG. 1;
FIG. 6 is a top view of the design of FIG. 1; and,
FIG. 7 is a bottom view of the design of FIG. 1.
The broken line message “stop,” including its position and size, illustrate environmental structure that forms no part of the claimed design, and is intended to illustrate optional environmental features that can be omitted, with the underlying surface being continuous and uninterrupted.