DROK UPS Backup Uninterruptible Power Supply AC 110V-240V to DC 13.5V 1.5A for Charging 12 Volt 20AH Battery Camera Alarm Probe Input Voltage: 110v-240v AC, 50/60Hz; output : DC 13 5V, 1 5A, 18W; dimensions: 90 mm x 52 mm x 30mm With battery interface, can be used with lead-acid battery and the maximum can be equipped with 12V 7Ah battery, the Voltage after power off is the direct output Voltage of lead-acid battery With ups function, it has high charging efficiency when charging battery and also can control battery's charging status automatically, effectively extend battery's performance life Single output, adopts battery detecting, protecting, it can switch to be battery powered automatically when power off; with multiple protections: short circuit, over-current, over-voltage protection Application: the ups power supply can concentrated on powering up cameras, alarm probe locally or other places that need continuous power