Backup power supply 75 W / 24 V with a wide range of input voltage. High reliability of the device (MTBF 461,200 hours) The source is intended for powering 24 V devices and simultaneously charges a 24 V lead-acid battery (not included). In case of a power outage, the device is powered from the battery. Since the battery is connected directly to the device, this guarantees zero switch-over time. Ideal for powering DC devicessuch as Wi-Fi, security devices, alarms, and similar.