The ornamental design for a surveillancecamera, as shown and described.
1. Surveillance camera
1.1 is a perspective view of a surveillance camera, showing our new design;
1.2 is a front elevation view thereof;
1.3 is a rear elevation view thereof;
1.4 is a left-side elevation view thereof;
1.5 is a right-side elevation view thereof;
1.6 is a top plan view thereof;
1.7 is a bottom plan view thereof;
1.8 is a perspective view of an exemplary electronic device with the surveillance camera installed; and
1.9 is an exploded perspective view of the exemplary electronic device shown in 1.8.
The broken lines shown in figure 1.3 depict portions of the surveillance camera that form no part of the claimed design. The broken lines shown in figures 1.8 and 1.9 illustrate an exemplary electronic device and form no part of the claimed design.