1Adds wireless o connectivity to any active loudspeaker 2Connect your o source to the receiver and it sends the signal to your receivers 3No compromise in o quality; Send o in high-fidelity stereo or mono (system selectable) 4Adjustable squelch eliminates interference 5Perfect for multi-room venues, weddings, mobile DJ's, tricky floor monitor placement and mobile A/V Wireless in ear monitors allow for uncluttered stage sets and a reliably consistent sound wherever you move. Ideal for use by singers and musicians, this in ear monitor system for bands features an adjustable TNC antenna to extend and increase wireless range plus a clear digital LCD front panel display for at-a-glance monitoring. Features: 1. Adds wireless o connectivity to any active loudspeaker 2. Connect your o source to the receiver and it sends the signal to your receivers 3. No compromise in o quality; Send o in high-fidelity stereo or mono (system selectable) 4. Adjustable squelch eliminates interference 5. Perfect for multi-room venues, weddings, mobile DJ's, tricky floor monitor placement and mobile A/V Transmitter Design: For Front panel of S2 transmitter Headphone output port can be plugged into 3.5mm headphone plug VOLUME knob adjusts the sound output of the transmitter headphone The Stereo/MONO button selects the o connected to the INPUT (L) input and the INPUT (R) input to mix in stereo or mono. In stereo Stereo mode, o connected to INPUT(L) is sent to the left earphone, and o connected to INPUT(R) is sent to the right earphone. In mono MONO mode, o connected to INPUT (L) and (R) is sent to the headphones on both sides. For S2 transmitter rear panel Power button turns the power on and off INPUT(L) receives signals through the XLR line, and in stereo mode, the signal is sent to the left channel INPUT(R) receives signals through the XLR line, and in stereo mode, the signal is sent to the right channel Receiver Design: LCD screen: display frequency, channel and battery level Antenna: Receives RF signals from the transmitter Power indicator: Green indicates that the battery is working properly Headphone jack Power and volume knob Frequency adjustment button Battery compartment Specification: Condition: 100% Material: Metal + ABS Color: Black Model: For ANLEON S2 Wireless Monitoring System (670-680mhz) Size: Approx. 155 * 120 * 40 mm / 6.1 * 4.7 * 1.5 inch Receiver Battery: 2*AA (NOT INCLUDED) Product Name: For ANLEON S2 Wireless Monitoring System (670-680MHZ) (without battery ) Product Weight: Approx. 483 g (Transmitter), 95 g (Receiver) Technical Parameters Frequency Response: 20Hz~18KHz Antenna: 1/4 wavelength Transmitter Power Supply: DC9V / 300mA Transmitter built-in o limiter Transmitter RF Output Power: 10 mW Receiver Standby Time: greater than 12 hours (using 1.5V 2*AA battery) (without battery ) Use Distance: Indoor 50 meters, Outdoor more than 100 meters Optional Carrier Frequency Range: 670-680Mhz (US General) Weight: Approx.