USED | HSD ENGINE O-WACS-100DI-5M HUMIDITY & TEMPERATURE TRANSMITTER The HSD ENGINE O-WACS-100DI-5M is a humidity and temperature transmitter designed for industrial automation and motion control systems. Made by the brand HSD ENGINE in South Korea, this sensor specifically functions to measure temperature. The transmitter plays a crucial role in monitoring and regulating temperature levels in various industrial settings, ensuring optimal conditions for equipment performance and process control.