This wireless batteryless transmitter push-button head is ideal for situations where quick actions are required for a process or machine to function correctly or where operator movements require maximum ergonomy It is clearly distinguishable visually at a distance thanks to its clear color It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP30 and IP65, making it ideal for operation in harsh environments It is easily combined with Harmony range of contact blocks to perform a large variety of control functions The cap is green