Hubbell celr1rne led edge-lit exit, single-face, red letters, recessed mount, w/ battery back-up superior panel illumination w/ red letters, led life-cycle of more than 10 years, 120/277v input, includes long-life nickel cadmium battery for 90 minute emergency lighting, field installed directional arrow indicators with temlatek mirror divider, provided w/ test switch & ac-on indicator, recessed mount with full recessed box complete with integrated caddy-bar assembly