With frequency stabilizer and high frequency magnetic leakage suppressor , this device prevents leakage of electro magnetic radiation to avoid jamming other electrical instruments such as television , radio etc 置有高周波頻率穩定器和高周波漏磁壓制器,此裝置能免除電波的漏出以免干擾別的電子裝置,像電視機、收音機等。