SKP 500 G2 is a plug-on wireless transmitter from Sennheiser in the 500-series line. It is designed to deliver audio from external lavalier or instrument mics to a compatible wireless receiver. The unit features a solid metal housing, an XLR input for mic or line-level signals, adjustable input level, and front panel LEDs for power and RF status. It supports infrared syncing with select receivers and operates within Sennheiser's UHF wireless ecosystem.