The Austdac Uninterruptible Power Supply (UPS) type 12/NMH/288 has been designed to provide battery backup for equipment located in hazardous areas that operates from a nominal 12Vdc supply. The UPS can support loads up to a maximum of 2.5A. The UPS charges its internal battery and supports the load whenever the mains supply is available, the UPS supports the load from the internal battery whenever the mains supply is lost.