Main power supply module for the RBK302 system. The PSS902 provides a 12 VDC output up to 2.5 A for the general supply and 0.5 A for active antennas, with protection if the antenna cables short. It accepts 90–264 VAC mains (40 VA max) and includes status LEDs for active antennas and apparatus-on, an ON/OFF switch, a multipole output connector, and a mains input connector. Dimensions 123 × 49 × 318 mm; weight ~915 g. It complies with EN 61000-3-2 and EN 60950-1.