Modulate:Wideband FM Modulate Video Format:NTSC/PAL Antenna Connector:SMA Connector Operation : After powering on and turning on the digital tube, it will display the last saved frequency band and channel, Implement module channels through two buttons CH, frequency band FR adjustment, and a power on button (note: be sure to turn it on after the antenna is installed,otherwise it will burn out the power amplification IC) A:Frequency band adjustment In the initial startup state,press the FR button to adjust the current frequency band.Short press the FR button(about 0.5s)once to switch the frequency band from 1 to 2,and the digital display will switch from I to 2;Short press the FR button again(about 0.5S),the frequency band will jump from 2 to 3,the digital tube will display from 2 to 3,and so on.The frequency band will be displayed in sequence at .Loop between E.F.R.L.X digital display shows loop between 1.2.3.4.5.6.7 B:Channel adjustment Press the CH button to adjust the current channel.Short press the CH button(about 0.5s)once to switch the frequency band from l to 2,and the digital display will switch from 1 to 2;Short press the CH button again (about 0.5S),the frequency band will jump from 2 to 3.and the digital display will go from 2 to 3... and so on,the frequency band will cycle between 1.2.3.4.5.6.7.8,and the digital display will cycle between 1.2.3.4.5.6.7.8 C:Power on: After confirming that the matching antenna is installed properly.press the power on button and the transmitter will start working normally.Be careful not to block the cooling fan window of the transmitter NOTE:Please use within the legal limits of your country,mainly using aerial models for viewing beyond visual range Colour:Gray Material:Metal Package Contents: 1 * transmitting module 1 * antenna1 * cable 1 * English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.