Feature Package name FM TransmitterKit model RF 02Working voltage DC3 6VWorking current 5 15mATransmission frequency 88 108MHzLaunch distance 5 50 meters Affected by the level of production and the use of the environment PCB size 53 40mmAntenna 300mm soft antennaAssembly instructions electronic version Click here to open Frequency stability Better relative to RF 01 model Sensitivity Microphone 0 5 meters range of normal speech can be receivedSound quality Better relative to RF 01 model Package weight 15gMIC and audio input conversion Audio priority pull out the audio line MIC work insert the audio line MIC off the audio input maximum 15dB Package includes 3 x RF 02 Wireless Microphone PartsSoldered PCB for reference only