Some of the features that help with maintenance and downtime costs are the larger, magnified tension window helping to reduce the setup times. The high intensity LED allows for better viewing from a longer distance. The optional restart switch saves the cost of installing a local control station or using an HMI. Estops are prone to damage when installed in a warehouse environment. The replaceable front cover allows the user to quickly and easily replace a damaged cover without the need for wiring. The customer simply loosens the four cover screws, removes the cover and replace.