Product Overview The Elmdene 4HR UPS Range has been designed to provide a cost effective solution for providing extended standby power to critical security applications such as PoE IP CCTV or Access Control systems. The range is available in three different power variants: 75W, 175W, 250W. When used with the recommended standby batteries the devices will provide a minimum of 4 hours standby time at full load in the event of a mains failure. All models are housed within a standard 4U 19” rack enclosure, providing a true sine wave 220V ac output for the powered devices. Front panel LED status indication allows quick system diagnosis on the front panel. Volt-free fault outputs are available on the rear panel for remote signalling if required. This range offers the installer a simple ‘plug and play’ UPS installation, utilising industry style batteries and enclosures.