The Sennheiser SK 500 G4 is a waistband wireless transmitter compatible with the EM 300-500 G4 receiver. Durable metal products are suitable for everyday use on stage by performers and presenters. The transmitter operates in a wide tuning range of 50 MHz UHF with 2000 selectable frequencies. It provides up to 8 hours of operation on two AA batteries, a transmission range of up to 100 meters, and a selectable 10/30/50mW RF power output to overcome interference in RF environments.

SK 500 G4 has 3 locks.
The 5mm connector has adjustable mic/line input levels and fits your choice of lapel or headphone microphones or adapter cables for guitar and bass. When the sync function of the receiver is enabled, the transmitter and receiver are quickly connected to the same infrared frequency. The transmitter's backlit LCD displays important information, while a simple programmable mute function can be turned off to prevent changes during the show.

The unit can also be powered by the rechargeable battery BA 2015 Accupack (sold separately). External users allow Accupack to charge without removing the transmitter - need L 2015 fast charger (supplied separately).
The SK 500 G4 is backward compatible with all previous versions. You can mix and match G4 / G3 / G2 / G1 receivers or bodypacks, holders and pluggable transmitters. Also compatible with EW 300/500 systems.