The OEM two way products are designed for complex communication and automation systems. They can be configured to collect and report data on the performance of their connected appliances. Terms used will include Load Sensing – where the controller senses and can report when the load is running. Load Calling is a feature that senses when the load is under control but would otherwise be running and Adaptive Control where the controller adapts to the connected appliance and locale. Power Measurement is a sub-system that will capture voltage, current, power factor, Watts and Watt Hours for the connected load. Touchpad technology is used in lieu of pushbuttons or other means for local controls. The TC251 products support OTA programming, extensive data logging and reporting functions as well as advanced Zigbee like control functions. Manufacturer Specific Clusters have been added to support features outside the limits of Zigbee. We believe the TC251 to be the worlds most advanced load control switch.