Supply current:130mA. RF input:50ohm SMA. Video output voltage:1.0Vp_p75ohm. Audio output voltage:1.0Vp_p10Kohm 56 channels, 7 frequency band wireless receiving. Two buttons for channel and band exchange individually. Twonumber display, timely locate the current receiving frequency and band. When power on, storage memory shows channel and frequency of the last time. Two-way video and audio signal output (video:PAL,NTSC,CECAM; Audio:6.5MHz) 5dB sensitivity gain more than normal receivers. Wide supply 12V Operation method:After powering on and turning on the digital tube,it display the last saved frequency band and channel.Implement module channels through two buttons CH,frequency band Regulation of FR 1: Frequency band adjustment: In the initial startup state, the FR button to adjust the current frequency band.Short the FR button(about 0.5s)once to switch the frequency band from 1 to 2,and the digital display switch from 1 to 2; Short the FR button again(about 0.5S),the frequency band