the t.bone freeU Twin PT 823, 2-Channel UHF Wireless System, Includes a pocket transmitter with a guitar cable for applications with instruments, Frequency band: 823 - 832 MHz, Frequency range: 60 - 17,000 Hz, 10 Pre-programmed frequency groups with 10 available channels each, Auto squelch, Frequency scan in the receiver, Adjustable AF output, Transmission power: 30 mW, Infrared transfer of the settings from the receiver to the transmitter, Pilot tone, Increments of 80 kHz, Modulation type: F3E, LCD display, 2 BNC connectors for antennas, 2 XLR outputs and 1 jack output, Operates with a 12 V, 1 A DC power supply (positive polarity (+) inside), Transmitter housing: Plastic, LCD display, Operates with 2 AA batteries or rechargeable batteries, Housing: 9.5"", 1 U, Includes guitar cables, antennas, EU power supply and rack kit for the installation of a 1 U receiver@+*Note:* In this frequency band a maximum of up to 2 systems (a total of 4 channels) can be operated simultaneously.@+@+