The ornamental design for a securitymonitoringbasestation, as shown and described.
FIG. 1 is a perspective view of a new design for a security monitoring base station;
FIG. 2 is a front view for the security monitoring base station;
FIG. 3 is a rear view for the security monitoring base station;
FIG. 4 is a side view for the security monitoring base station; and,
FIG. 5 is a top view for the security monitoring base station.
The surfaces of the security monitoring base station as shown in FIGS. 1-5 are illustrated at least partially in solid black to show color contrast in accordance with 37 CFR 1.152.
The broken line showing of a lens is included for the purpose of illustrating portions of the “article” and forms no part of the claimed design.