<ul><li>Detachable from below, making service and maintenance easier than ever</li><li>Compact, low-profile design</li><li>Energy consumption of less than 3W for AC&nbsp;only and less than 5W for battery backup (EM)</li><li>Emergency backup model (EM)&nbsp;is completely self-contained</li><li>Infield installable directional indicators</li><li>Standard AC and emergency units available</li><li>AC "ON" indicator light and test switch (EM units only)</li><li>Ni-Cad battery on emergency (EM)&nbsp;units</li><li>120V/277V Dual Voltage operation</li></ul>