Radiodetection RF Marker Ball – Power (Red) The Radiodetection RF Marker Ball – Power is a passive marker designed to identify underground electrical utilities. RF marker balls are passive, frequency-tuned markers that resonate when energized by a locator signal, enabling accurate underground utility identification without power or maintenance. It can be reliably detected using Radiodetection marker ball locators including the MRX SG, MRX G, and MRX, helping crews locate critical power infrastructure with confidence. Its durable, waterproof construction and red color coding provide immediate utility recognition in the field. Utility Type: Power Color: Red Part Number: 61/OMPOWER-MK2 Packaging: Box of 30