... shell,you can OEM the frequency or Oem it by your design.it suit for using in the FPV. Specification: ... receiver, 1 antenna, AV cableOperation Temperature-10 0C+50 0CTransmitter: Working VoltageDC 5V TO 12VWorking Current150mA to 300mAOutput Frequency1.2G/2.4GChannel Number4CHSOutput ... bottun can change the channel of receover.Meanwhile,push it and last several seconds can close the digital play ...