This Harmony is clearly distinguishable visually at a distance due to clear colors and illumination via integral LED, enabling complex machine statuses to be read at a glance.::It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP65, making it ideal for operation in harsh environments.::It has a double insulated plastic bezel.::Its wide range of operating temperatures from -25°C to 70°C allows versatility in usage of product.