Lectrosonics IFBT4-VHF transmitter: audio monitoring system for directors & clients + talent cueing and crew communications. Power supply, D-tap power cable & 2x Mini XLR – XLR3M cable included. Transmitter only, please choose Receiver(s) below. http://www.lectrosonics.com/US/IFB/product/523-ifbt4-vhf.html