LED Exit signs are a critical light that must be present in any building to better plan for inadequacies and unexpected tragedies. There are several different types of exit signs to choose from. However, which one to use is decided by the state you live in and the local rules for installing exit signs. These LED Emergency Double-Sided Exit Light Fixtures of 4 W are available with Green By providing a sense of security, these lights are designed to work under the voltage of 120V-227V. LED Exit Lights are highly durable and are very easy to install. It comes with a lifespan of 25,000 hours and is available with a warranty of 2 years. These lights are UL listed and come with the special feature of inbuilt battery backup if the power grid fails during an emergency.