EnvisionLED LED-EM-DH LED Emergency Double Head Bug EyeEnvisionLED LED EM DH LED EM DH Product Description Now available is the EnVision Emergency LED Light. Place these fixtures on walls or ceilings near exit locations, and even combine these lights with our Emergency EXIT Signs for a great EXIT sign combination. With a nickel cadmium battery, the charging time for this fixture is 24 hours, with a discharge time or backup time of 90 minutes. Description: CERTIFICATION UL ListedCRI >83COLOR TEMP. 1 Day