The VX-3000DS is an emergency power supply manager used for the SX-2000, VX-2000 and VM-3000 systems. It is a 3U rack-mountable unit equipped with a battery charger and double-switching power supplies, which contribute to rack space, energy savings and lightweight design. The VX-3000DS is characterized by its easy maintenance, as the function setting switch and the kill switch are located inside the front panel, and the fuse change can be done at the rear of the unit. DC power supply to all system components. Combination of two integrated power supplies with a high performance charger. Automatic switch to auxiliary battery power if AC power supply does not work. VX-3000DS: EN 54-4 Certification, Certificate No. 1134-CPR-137.