Backup power supply 75 W / 12 V with a wide range of input voltage. High reliability of the device (MTBF 461,200 hours) The supply is used to power 12 V appliances and also charges a 12 V lead-acid battery (not included). In case of a power failure, the appliance is powered from the battery. Because the battery is connected directly to the appliance, zero switching time is guaranteed. Ideal for powering DC devices such as Wi-Fi, security devices, alarms, and similar.