This Harmony ZB white light block operates with a universal LED. It is supplied with 24V to 120V AC/DC and uses screw-clamp terminals. It has a plastic body. It is compatible with the Harmony XB4 and XB5. This light block allows fast and easy replacement and configuration of your signaling units. It is easily installed and replaced on compatible illuminated push-button or selector switch units via clip-together assembly and connected with simple screw-clamp connections. It enables the visual distinction of signaling units via illumination by a universal LED. It protects operators from unexpected contact with live circuits thanks to its IP20 protection index. Its wide range of operating temperatures, from -40°C to 70°C, allows versatility in the usage of the product. Vibration-resistant screw clamp connection terminals ensure high vibration resistance, making the product suitable for installation on high-impact machines.