The JLG E400A is known for its compact design, which allows it to maneuver easily in tight spaces, making it ideal for indoor use. It features an articulated boom that provides access to hard-to-reach areas with precision. The machine is battery-powered, ensuring quiet operation and zero emissions, which suits indoor environments. It also offers a good balance between height and outreach, with a platform height of around 40 feet, which facilitates a variety of maintenance or installation tasks. Additionally, it includes features like a proportional control system for smooth movement and operation.