Metal housing white color EN50131 grade 2 certified equipped with: - Open Frame switching power supply unit, PB battery charger, input 90?260 VAC / 50?60Hz, output 13.8 VDC / 5 A EN50131-6 grade 2 certified - Card on bus for managing the power supply units, equipped with 2 RS485 buses for the connection to the control panel and for carrying out the bus isolator function (opto-isolated), 4 programmable open collector outputs (default programmed as power supply signaling), 2 auxiliary power outputs with 1.5 A self-resetting fuse, 8-pin dip-switch for addressing (8 power supplies max) and speed selection - 7Ah or 18Ah batteries accomodation - anti-tear and anti-open tamper Dimensions (W x H x D) 315 x 440 x 95 mm.