Digital wireless bodypack transmitter for vocals, instruments, or whatever electronic signal you want to wireless send to a compatible receiver. Digital wireless receiver combines automatic frequency management with true digital diversity for a solid signal and excellent audio clarity. Features include license-free operation in the 2.4 GHz spectrum, LINKFREQ, and adjustable gain control. **No battery in GLXD1 - No PSU - Requires 15VDC 600ma*