... : FM-Input VSWR: 2:1-Receiving Frequency: -ISM 2,400 MHz~2,483 MHz-CH1=2,414 MHz;CH2=2,432 MHz-CHI=2,450 MHz; CH4 ... : FM-Input VSWR: 2:1-Receiving Frequency: -ISM 2,400 MHz~2,483 MHz-CH1=2,414 MHz;CH2=2,432 MHz-CHI=2,450 MHz; CH4 ... .Power Supply : AC-DC ( DC + 9V 800 mA ) Earphone 1PCS 2.4GHz Wireless receiver (2.5" TFT LCD MONITOR)